welcome glib main loop integration support.

welcome glib main loop integration support.

that's it, it's here... tested and works fine, please try with your
favorite gmainloop dependent library and report problems. Suggestions:

  * GConf to access Gnome and its applications settings.
  * GtkSettings to access other properties of Gnome and its applications.
  * GUPnP (okay, we have EUPnP, but they have more features so far)
  * Rygel, based on GUPnP.
  * Libsoup, SOAP and HTTP access, useful for web access and required
    by other libraries.
  * Mojito, by Moblin, access to various web2.0 services like flickr,
    picasa, twitter...

And last but not least, this enables Flash plugin on WebKit-EFL and
may enable us to get Google Gadgets sooner (before someone writes a
proper EFL backend).

Support is auto-detected at compile time but can be disabled with
--disable-glib. Runtime support is not enabled by default (so
compiling with it will just link yet another library), one needs to
call ecore_main_loop_glib_integrate() to do so.

Thanks to INdT folks that provided the initial implementation. I
rewrote it to make it correct, but the idea was good.

git-svn-id: http://svn.enlightenment.org/svn/e/trunk/ecore@42825 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33