[gobject-introspection] gir: Update annotations from GLib 2.53.5

[Rico Tzschichholz <ricotz src gnome org>]

commit b5c8d292939c8ad8d3c7dff15b78e649c04f5703
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Aug 8 12:20:21 2017 +0200

    gir: Update annotations from GLib 2.53.5

 gir/gio-2.0.c  |    5 ++++-
 gir/glib-2.0.c |   36 +++++++++++++++++++++++++-----------
 2 files changed, 29 insertions(+), 12 deletions(-)
---
diff --git a/gir/gio-2.0.c b/gir/gio-2.0.c
index c2eb3d9..6c71c30 100644
--- a/gir/gio-2.0.c
+++ b/gir/gio-2.0.c
@@ -18323,7 +18323,7 @@
  *
  * For example, an exported D-Bus interface may queue up property
  * changes and emit the
- * `org.freedesktop.DBus.Properties::Propert``
+ * `org.freedesktop.DBus.Properties::PropertiesChanged`
  * signal later (e.g. in an idle handler). This technique is useful
  * for collapsing multiple property changes into one.
  *
@@ -27497,6 +27497,9 @@
  * handled (but note that future GLib releases may return a more
  * specific value instead).
  *
+ * As %errno is global and may be modified by intermediate function
+ * calls, you should save its value as soon as the call which sets it
+ *
  * Returns: #GIOErrorEnum value for the given errno.h error number.
  */
 
diff --git a/gir/glib-2.0.c b/gir/glib-2.0.c
index fe3c262..1383689 100644
--- a/gir/glib-2.0.c
+++ b/gir/glib-2.0.c
@@ -5773,8 +5773,10 @@
  * foo_open_file (GError **error)
  * {
  *   gint fd;
+ *   int saved_errno;
  *
  *   fd = open ("file.txt", O_RDONLY);
+ *   saved_errno = errno;
  *
  *   if (fd < 0)
  *     {
@@ -5782,7 +5784,7 @@
  *                    FOO_ERROR,                 // error domain
  *                    FOO_ERROR_BLAH,            // error code
  *                    "Failed to open file: %s", // error message format string
- *                    g_strerror (errno));
+ *                    g_strerror (saved_errno));
  *       return -1;
  *     }
  *   else
@@ -19299,7 +19301,7 @@
  *
  * A convenience macro to get the previous element in a #GList.
  * Note that it is considered perfectly acceptable to access
- * @list->previous directly.
+ * @list->prev directly.
  *
  * Returns: the previous element, or %NULL if there are no previous
  *          elements
@@ -27144,6 +27146,8 @@
  * @slist: an element in a #GSList.
  *
  * A convenience macro to get the next element in a #GSList.
+ * Note that it is considered perfectly acceptable to access
+ * @slist->next directly.
  *
  * Returns: the next element, or %NULL if there are no more elements.
  */
@@ -27985,10 +27989,10 @@
  * You should call g_spawn_close_pid() on the returned child process
  * reference when you don't need it any more.
  *
- * If you are writing a GTK+ application, and the program you are
- * spawning is a graphical application, too, then you may want to
- * use gdk_spawn_on_screen() instead to ensure that the spawned program
- * opens its windows on the right screen.
+ * If you are writing a GTK+ application, and the program you are spawning is a
+ * graphical application too, then to ensure that the spawned program opens its
+ * windows on the right screen, you may want to use #GdkAppLaunchContext,
+ * #GAppLaunchcontext, or set the %DISPLAY environment variable.
  *
  * Note that the returned @child_pid on Windows is a handle to the child
  * process and not its identifier. Process handles and process identifiers
@@ -28158,10 +28162,10 @@
  * If @child_pid is not %NULL and an error does not occur then the returned
  * process reference must be closed using g_spawn_close_pid().
  *
- * If you are writing a GTK+ application, and the program you
- * are spawning is a graphical application, too, then you may
- * want to use gdk_spawn_on_screen_with_pipes() instead to ensure that
- * the spawned program opens its windows on the right screen.
+ * If you are writing a GTK+ application, and the program you are spawning is a
+ * graphical application too, then to ensure that the spawned program opens its
+ * windows on the right screen, you may want to use #GdkAppLaunchContext,
+ * #GAppLaunchcontext, or set the %DISPLAY environment variable.
  *
  * Returns: %TRUE on success, %FALSE if an error was set
  */
@@ -28774,7 +28778,17 @@
  *
  * Note that the string may be translated according to the current locale.
  *
- * The value of %errno will not be changed by this function.
+ * The value of %errno will not be changed by this function. However, it may
+ * be changed by intermediate function calls, so you should save its value
+ * as soon as the call returns:
+ * |[
+ *   int saved_errno;
+ *
+ *   ret = read (blah);
+ *   saved_errno = errno;
+ *
+ *   g_strerror (saved_errno);
+ * ]|
  *
  * Returns: a UTF-8 string describing the error code. If the error code
  *     is unknown, it returns a string like "unknown error (<code>)".