* fix requirements values (should be good, now)

 * fix requirements values (should be good, now)
 * ecore-ipc is an option for ecore-config and not a required dependency
 * use Requires.private field in all the .pc if pkg-config 0.22 or later is
   installed. We list in it the required packages needed to compile the modules.
 * remove uneeded flags that are in Libs.private (those from the packages
   that are listed in Requires.private)

git-svn-id: svn+ssh://svn.enlightenment.org/var/svn/e/trunk/ecore@42873 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33