[glibmm] Gio::Application: Allow the application ID to be empty.

[Murray Cumming <murrayc src gnome org>]

commit b6ee18e086ba52a674ecb4c22dc51d9e9ea1d932
Author: Murray Cumming <murrayc murrayc com>
Date:   Sun May 27 11:31:27 2012 +0200

    Gio::Application: Allow the application ID to be empty.
    
    * configure.ac: Depend on the latest unstable glib release (2.33.1).
    * gio/src/application.hg: constructor, create(): Add a default
    (empty string) parameter for the application ID, because this may
    now be empty if you do not need the full GApplication functionality.

 ChangeLog              |    9 +++++++++
 configure.ac           |    2 +-
 gio/src/application.hg |   16 ++++++++++++++--
 3 files changed, 24 insertions(+), 3 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 5b87399..c357ddd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2012-05-27  Murray Cumming  <murrayc murrayc com>
+
+	Gio::Application: Allow the application ID to be empty.
+
+	* configure.ac: Depend on the latest unstable glib release (2.33.1).
+	* gio/src/application.hg: constructor, create(): Add a default 
+	(empty string) parameter for the application ID, because this may
+	now be empty if you do not need the full GApplication functionality.
+
 2012-04-21  Kalev Lember  <kalevlember gmail com>
 
 	Gio: Start wrapping GResource.
diff --git a/configure.ac b/configure.ac
index b462cc3..2a15726 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,7 +60,7 @@ AS_IF([test "x$enable_static" = xyes],
   AC_DEFINE([GIOMM_STATIC_LIB],  [1], [Define if giomm is built as a static library])
 ])
 
-glibreq='2.0 >= 2.32.0'
+glibreq='2.0 >= 2.33.1'
 
 GLIBMM_MODULES="sigc++-2.0 >= 2.2.10 glib-$glibreq gobject-$glibreq gmodule-$glibreq"
 GIOMM_MODULES="$GLIBMM_MODULES gio-$glibreq"
diff --git a/gio/src/application.hg b/gio/src/application.hg
index edaf38f..70db6b6 100644
--- a/gio/src/application.hg
+++ b/gio/src/application.hg
@@ -90,11 +90,23 @@ class Application : public Glib::Object, public ActionGroup, public ActionMap
   _IMPLEMENTS_INTERFACE(ActionMap)
 
 protected:
-  explicit Application(const Glib::ustring& application_id, ApplicationFlags flags = APPLICATION_FLAGS_NONE);
+  /** Constructs an application instance.
+   * If no application ID is given then some features (most notably application uniqueness) will be disabled.
+   *
+   * @aparam application_id The application ID.
+   * @param flags The application flags.
+   */
+  explicit Application(const Glib::ustring& application_id = Glib::ustring(), ApplicationFlags flags = APPLICATION_FLAGS_NONE);
   _IGNORE(g_application_new)
 
 public:
-  _WRAP_CREATE(const Glib::ustring& application_id, ApplicationFlags flags = APPLICATION_FLAGS_NONE)
+  /** Creates an application instance.
+   * If no application ID is given then some features (most notably application uniqueness) will be disabled.
+   *
+   * @aparam application_id The application ID.
+   * @param flags The application flags.
+   */
+  _WRAP_CREATE(const Glib::ustring& application_id = Glib::ustring(), ApplicationFlags flags = APPLICATION_FLAGS_NONE)
 
   _WRAP_METHOD(static bool id_is_valid(const Glib::ustring& application_id), g_application_id_is_valid)