No longer invoke recursively the GNATcoll configure,
no longer expect GNATcoll to be under gnatlib,
and expect GNATcoll projects to be found on the
standard project search paths.
For O827-030.
Change-Id: I9a271d288124ef8d9b2e296502b03096c08c00a4
Add gnatcoll_python as dependency of python_core.gpr
For M227-043
git-svn-id: svn+ssh://svn.eu.adacore.com/Dev/trunk/gps@215575 936e1b1b-40f2-da11-902a-00137254ae57