[libsigcplusplus] Docs: Fix invokation->invocation typos.

[Murray Cumming <murrayc src gnome org>]

commit 4935445cde8a0d9671f37436d5e0abec29b1aa44
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Apr 29 09:19:22 2016 +0200

    Docs: Fix invokation->invocation typos.

 sigc++/adaptors/bind.h        |    4 ++--
 sigc++/adaptors/bind_return.h |    2 +-
 sigc++/adaptors/compose.h     |   14 +++++++-------
 sigc++/functors/mem_fun.h     |   16 ++++++++--------
 sigc++/functors/ptr_fun.h     |    2 +-
 sigc++/signal.h               |    2 +-
 6 files changed, 20 insertions(+), 20 deletions(-)
---
diff --git a/sigc++/adaptors/bind.h b/sigc++/adaptors/bind.h
index 8c4857c..08e1ee7 100644
--- a/sigc++/adaptors/bind.h
+++ b/sigc++/adaptors/bind.h
@@ -272,7 +272,7 @@ struct visitor<bind_functor<-1, T_functor, T_type...>>
  *
  * @param func Functor that should be wrapped.
  * @param b Arguments to bind to @e func.
- * @return Adaptor that executes @e func with the bound argument on invokation.
+ * @return Adaptor that executes @e func with the bound argument on invocation.
  *
  * @ingroup bind
  */
@@ -289,7 +289,7 @@ bind(const T_functor& func, T_bound... b)
  *
  * @param func Functor that should be wrapped.
  * @param b Arguments to bind to @e func.
- * @return Adaptor that executes func with the bound argument on invokation.
+ * @return Adaptor that executes func with the bound argument on invocation.
  *
  * @ingroup bind
  */
diff --git a/sigc++/adaptors/bind_return.h b/sigc++/adaptors/bind_return.h
index 44dcf96..0da105e 100644
--- a/sigc++/adaptors/bind_return.h
+++ b/sigc++/adaptors/bind_return.h
@@ -101,7 +101,7 @@ struct visitor<bind_return_functor<T_return, T_functor>>
  *
  * @param functor Functor that should be wrapped.
  * @param ret_value Argument to fix the return value of @e functor to.
- * @return Adaptor that executes @e functor on invokation and returns @e ret_value.
+ * @return Adaptor that executes @e functor on invocation and returns @e ret_value.
  *
  * @ingroup bind
  */
diff --git a/sigc++/adaptors/compose.h b/sigc++/adaptors/compose.h
index b892a39..fb4e081 100644
--- a/sigc++/adaptors/compose.h
+++ b/sigc++/adaptors/compose.h
@@ -25,7 +25,7 @@ namespace sigc
 
 /** @defgroup compose compose()
  * sigc::compose() combines two or three arbitrary functors.
- * On invokation, parameters are passed on to one or two getter functor(s).
+ * On invocation, parameters are passed on to one or two getter functor(s).
  * The return value(s) are then passed on to the setter function.
  *
  * @par Examples:
@@ -70,7 +70,7 @@ struct compose1_functor : public adapts<T_setter>
   }
 
   /** Constructs a compose1_functor object that combines the passed functors.
-   * @param setter Functor that receives the return values of the invokation of @e getter1 and
+   * @param setter Functor that receives the return values of the invocation of @e getter1 and
    * @e getter2.
    * @param getter Functor to invoke from operator()().
    */
@@ -104,7 +104,7 @@ struct compose2_functor : public adapts<T_setter>
   }
 
   /** Constructs a compose2_functor object that combines the passed functors.
-   * @param setter Functor that receives the return values of the invokation of @e getter1 and
+   * @param setter Functor that receives the return values of the invocation of @e getter1 and
    * @e getter2.
    * @param getter1 Functor to invoke from operator()().
    * @param getter2 Functor to invoke from operator()().
@@ -162,9 +162,9 @@ struct visitor<compose2_functor<T_setter, T_getter1, T_getter2>>
 
 /** Creates an adaptor of type sigc::compose1_functor which combines two functors.
  *
- * @param setter Functor that receives the return value of the invokation of @e getter.
+ * @param setter Functor that receives the return value of the invocation of @e getter.
  * @param getter Functor to invoke from operator()().
- * @return Adaptor that executes @e setter with the value returned from invokation of @e
+ * @return Adaptor that executes @e setter with the value returned from invocation of @e
  * getter.
  *
  * @ingroup compose
@@ -178,11 +178,11 @@ compose(const T_setter& setter, const T_getter& getter)
 
 /** Creates an adaptor of type sigc::compose2_functor which combines three functors.
  *
- * @param setter Functor that receives the return values of the invokation of @e getter1 and
+ * @param setter Functor that receives the return values of the invocation of @e getter1 and
  * @e getter2.
  * @param getter1 Functor to invoke from operator()().
  * @param getter2 Functor to invoke from operator()().
- * @return Adaptor that executes @e setter with the values return from invokation of @e
+ * @return Adaptor that executes @e setter with the values return from invocation of @e
  * getter1 and @e getter2.
  *
  * @ingroup compose
diff --git a/sigc++/functors/mem_fun.h b/sigc++/functors/mem_fun.h
index 6808a39..d53b967 100644
--- a/sigc++/functors/mem_fun.h
+++ b/sigc++/functors/mem_fun.h
@@ -183,7 +183,7 @@ struct visitor<bound_mem_functor<T_func, T_arg...>>
 
 /** Creates a functor of type sigc::mem_functor which wraps a  method.
  * @param func Pointer to method that should be wrapped.
- * @return Functor that executes func on invokation.
+ * @return Functor that executes func on invocation.
  *
  * @ingroup mem_fun
  */
@@ -196,7 +196,7 @@ mem_fun(T_return (T_obj::*func)(T_arg...))
 
 /** Creates a functor of type sigc::const_mem_functor which wraps a const method.
  * @param func Pointer to method that should be wrapped.
- * @return Functor that executes func on invokation.
+ * @return Functor that executes func on invocation.
  *
  * @ingroup mem_fun
  */
@@ -209,7 +209,7 @@ mem_fun(T_return (T_obj::*func)(T_arg...) const)
 
 /** Creates a functor of type sigc::volatile_mem_functor which wraps a volatile method.
  * @param func Pointer to method that should be wrapped.
- * @return Functor that executes func on invokation.
+ * @return Functor that executes func on invocation.
  *
  * @ingroup mem_fun
  */
@@ -222,7 +222,7 @@ mem_fun(T_return (T_obj::*func)(T_arg...) volatile)
 
 /** Creates a functor of type sigc::const_volatile_mem_functor which wraps a const volatile method.
  * @param func Pointer to method that should be wrapped.
- * @return Functor that executes func on invokation.
+ * @return Functor that executes func on invocation.
  *
  * @ingroup mem_fun
  */
@@ -237,7 +237,7 @@ mem_fun(T_return (T_obj::*func)(T_arg...) const volatile)
  * instance.
  * @param obj Reference to object instance the functor should operate on.
  * @param func Pointer to method that should be wrapped.
- * @return Functor that executes @e func on invokation.
+ * @return Functor that executes @e func on invocation.
  *
  * @ingroup mem_fun
  */
@@ -252,7 +252,7 @@ mem_fun(/**/ T_obj& obj, T_return (T_obj2::*func)(T_arg...))
  * object instance.
  * @param obj Reference to object instance the functor should operate on.
  * @param func Pointer to method that should be wrapped.
- * @return Functor that executes @e func on invokation.
+ * @return Functor that executes @e func on invocation.
  *
  * @ingroup mem_fun
  */
@@ -267,7 +267,7 @@ mem_fun(/*const*/ T_obj& obj, T_return (T_obj2::*func)(T_arg...) const)
  * object instance.
  * @param obj Reference to object instance the functor should operate on.
  * @param func Pointer to method that should be wrapped.
- * @return Functor that executes @e func on invokation.
+ * @return Functor that executes @e func on invocation.
  *
  * @ingroup mem_fun
  */
@@ -282,7 +282,7 @@ mem_fun(/**/ T_obj& obj, T_return (T_obj2::*func)(T_arg...) volatile)
  * an object instance.
  * @param obj Reference to object instance the functor should operate on.
  * @param func Pointer to method that should be wrapped.
- * @return Functor that executes @e func on invokation.
+ * @return Functor that executes @e func on invocation.
  *
  * @ingroup mem_fun
  */
diff --git a/sigc++/functors/ptr_fun.h b/sigc++/functors/ptr_fun.h
index 0bda77f..12e2015 100644
--- a/sigc++/functors/ptr_fun.h
+++ b/sigc++/functors/ptr_fun.h
@@ -97,7 +97,7 @@ public:
 
 /** Creates a functor of type sigc::pointer_functor which wraps an existing non-member function.
  * @param func Pointer to function that should be wrapped.
- * @return Functor that executes @e func on invokation.
+ * @return Functor that executes @e func on invocation.
  *
  * @ingroup ptr_fun
  */
diff --git a/sigc++/signal.h b/sigc++/signal.h
index a7327c7..c666617 100644
--- a/sigc++/signal.h
+++ b/sigc++/signal.h
@@ -552,7 +552,7 @@ public:
    *
    * An accumulator is a functor that uses a pair of special iterators
    * to step through a list of slots and calculate a return value
-   * from the results of the slot invokations. The iterators' operator*()
+   * from the results of the slot invocations. The iterators' operator*()
    * executes the slot. The return value is buffered, so that in an expression
    * like @code a = (*i) * (*i); @endcode the slot is executed only once.
    *