[gobject-introspection/gnome-3-28] gir: Update annotations from glib 2.56.1

[Rico Tzschichholz <ricotz src gnome org>]

commit a94b706d6123982652b05b0c5e1a9d00694af9c7
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Apr 9 08:03:07 2018 +0200

    gir: Update annotations from glib 2.56.1

 gir/gio-2.0.c | 49 +++++++++++++++++++++++++++++++++++++------------
 1 file changed, 37 insertions(+), 12 deletions(-)
---
diff --git a/gir/gio-2.0.c b/gir/gio-2.0.c
index b8500132..edb5a17c 100644
--- a/gir/gio-2.0.c
+++ b/gir/gio-2.0.c
@@ -5091,10 +5091,11 @@
  * instance and g_application_run() promptly returns. See the code
  * examples below.
  *
- * If used, the expected form of an application identifier is very close
- * to that of of a
- * [D-Bus bus 
name](http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-interface).
- * Examples include: "com.example.MyApp", "org.example.internal-apps.Calculator".
+ * If used, the expected form of an application identifier is the same as
+ * that of of a
+ * [D-Bus well-known bus 
name](https://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-bus).
+ * Examples include: `com.example.MyApp`, `org.example.internal_apps.Calculator`,
+ * `org._7_zip.Archiver`.
  * For details on valid application identifiers, see g_application_id_is_valid().
  *
  * On Linux, the application identifier is claimed as a well-known bus name
@@ -13675,23 +13676,47 @@
  * A valid ID is required for calls to g_application_new() and
  * g_application_set_application_id().
  *
+ * Application identifiers follow the same format as
+ * [D-Bus well-known bus 
names](https://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-bus).
  * For convenience, the restrictions on application identifiers are
  * reproduced here:
  *
- * - Application identifiers must contain only the ASCII characters
- *   "[A-Z][a-z][0-9]_-." and must not begin with a digit.
+ * - Application identifiers are composed of 1 or more elements separated by a
+ *   period (`.`) character. All elements must contain at least one character.
  *
- * - Application identifiers must contain at least one '.' (period)
- *   character (and thus at least two elements).
+ * - Each element must only contain the ASCII characters `[A-Z][a-z][0-9]_-`,
+ *   with `-` discouraged in new application identifiers. Each element must not
+ *   begin with a digit.
  *
- * - Application identifiers must not begin or end with a '.' (period)
- *   character.
+ * - Application identifiers must contain at least one `.` (period) character
+ *   (and thus at least two elements).
  *
- * - Application identifiers must not contain consecutive '.' (period)
- *   characters.
+ * - Application identifiers must not begin with a `.` (period) character.
  *
  * - Application identifiers must not exceed 255 characters.
  *
+ * Note that the hyphen (`-`) character is allowed in application identifiers,
+ * but is problematic or not allowed in various specifications and APIs that
+ * refer to D-Bus, such as
+ * [Flatpak application IDs](http://docs.flatpak.org/en/latest/introduction.html#identifiers),
+ * the
+ * [`DBusActivatable` interface in the Desktop Entry 
Specification](https://specifications.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html#dbus),
+ * and the convention that an application's "main" interface and object path
+ * resemble its application identifier and bus name. To avoid situations that
+ * require special-case handling, it is recommended that new application
+ * identifiers consistently replace hyphens with underscores.
+ *
+ * Like D-Bus interface names, application identifiers should start with the
+ * reversed DNS domain name of the author of the interface (in lower-case), and
+ * it is conventional for the rest of the application identifier to consist of
+ * words run together, with initial capital letters.
+ *
+ * As with D-Bus interface names, if the author's DNS domain name contains
+ * hyphen/minus characters they should be replaced by underscores, and if it
+ * contains leading digits they should be escaped by prepending an underscore.
+ * For example, if the owner of 7-zip.org used an application identifier for an
+ * archiving application, it might be named `org._7_zip.Archiver`.
+ *
  * Returns: %TRUE if @application_id is valid
  */