[gobject-introspection] gir: Update annotations from GLib 2.54.0

[Rico Tzschichholz <ricotz src gnome org>]

commit 8e276ab531c76d8c297c963a8606a7d6c2ee1d73
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Sep 11 11:10:01 2017 +0200

    gir: Update annotations from GLib 2.54.0

 gir/gio-2.0.c  |    2 +-
 gir/glib-2.0.c |   15 +++++++++------
 2 files changed, 10 insertions(+), 7 deletions(-)
---
diff --git a/gir/gio-2.0.c b/gir/gio-2.0.c
index 6c71c30..a5c4ce3 100644
--- a/gir/gio-2.0.c
+++ b/gir/gio-2.0.c
@@ -13638,7 +13638,7 @@
  *   "[A-Z][a-z][0-9]_-." and must not begin with a digit.
  *
  * - Application identifiers must contain at least one '.' (period)
- *   character (and thus at least three elements).
+ *   character (and thus at least two elements).
  *
  * - Application identifiers must not begin or end with a '.' (period)
  *   character.
diff --git a/gir/glib-2.0.c b/gir/glib-2.0.c
index c13bffa..b9b8295 100644
--- a/gir/glib-2.0.c
+++ b/gir/glib-2.0.c
@@ -17489,8 +17489,7 @@
  * destroyed. The default value of this is %TRUE for channels created
  * by g_io_channel_new_file (), and %FALSE for all other channels.
  *
- * Returns: Whether the channel will be closed on the final unref of
- *               the GIOChannel data structure.
+ * Returns: %TRUE if the channel will be closed, %FALSE otherwise.
  */
 
 
@@ -17757,12 +17756,14 @@
  * g_io_channel_set_close_on_unref:
  * @channel: a #GIOChannel
  * @do_close: Whether to close the channel on the final unref of
- *            the GIOChannel data structure. The default value of
- *            this is %TRUE for channels created by g_io_channel_new_file (),
- *            and %FALSE for all other channels.
+ *            the GIOChannel data structure.
+ *
+ * Whether to close the channel on the final unref of the #GIOChannel
+ * data structure. The default value of this is %TRUE for channels
+ * created by g_io_channel_new_file (), and %FALSE for all other channels.
  *
  * Setting this flag to %TRUE for a channel you have already closed
- * can cause problems.
+ * can cause problems when the final reference to the #GIOChannel is dropped.
  */
 
 
@@ -17879,6 +17880,8 @@
  * is reading output from a command using via pipe, you may need to set
  * the encoding to the encoding of the current locale (see
  * g_get_charset()) with the g_io_channel_set_encoding() function.
+ * By default, the fd passed will not be closed when the final reference
+ * to the #GIOChannel data structure is dropped.
  *
  * If you want to read raw binary data without interpretation, then
  * call the g_io_channel_set_encoding() function with %NULL for the