Add g_app_info_supports_files() Remove desktop arg from

Add g_app_info_supports_files() Remove desktop arg from

2008-01-04  Alexander Larsson  <alexl@redhat.com>

        * gappinfo.[ch]:
        * gwin32appinfo.c:
        * gio.symbols:
	Add g_app_info_supports_files()
        Remove desktop arg from g_app_info_should_show().

        * gdesktopappinfo.[ch]:
	Implement g_app_info_supports_files() and new should_show()
	Add g_desktop_app_info_set_desktop_env() to set the desktop
	for should_show(). (This will be set by gtk+ later)

svn path=/trunk/; revision=6242