[vala] (17 commits) Non-fast-forward update to branch wip/issue/607

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/issue/607' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  44c2e5f... Add native support to specify non default length-type for a
  a1c6ed4... Renergate GIR-based bindings to pick up array length-types

Commits added to the branch:

  0202055... codegen: Make sure to include <sys/types.h> for ssize_t (PO (*)
  38d61fb... vala: Properly check GLib.Object naming convention for prop (*)
  edc0b53... codegen: Apply gconstpointer to gpointer cast to GenericTyp (*)
  7641f50... codegen: Fix access to captured generics in async method of (*)
  c2a9ded... codegen: Add get_generic_type_expression() and handle Gener (*)
  b8be96c... Make TypeParameter a TypeSymbol to resolve functions with a (*)
  58675b6... codegen: Unify handling of GenericType arguments/parameters (*)
  b165d68... codegen: Use if-clause for is_in_destructor() condition to  (*)
  6f30d21... codegen: More use of get_variable_cexpression() (*)
  376df8b... tests: Extend "finally block execution" test to increase co (*)
  f1d8635... tests: Add "generics reference transfer" test to increase c (*)
  d7123cf... tests: Add more "DBus" tests to increase coverage (*)
  472765b... codegen: Emit external creation methods in bindings (*)
  d0615e6... glib-2.0: Wrap TimeZone.identifier() constuctor for proper  (*)
  145bfaf... vala: length-type of arrays must not be nullable (2)
  d94a4d4... Add native support to specify non default length-type for a
  97989f1... Renergate GIR-based bindings to pick up array length-types

(*) This commit already existed in another branch; no separate mail sent