Switched build-etoile.sh to use Etoile Git repository based on Eric's changes.

Also fixed libdispatch header search paths when the build is not a test build.


git-svn-id: http://svn.gna.org/svn/etoile/trunk/Etoile/BuildScripts@10488 7b3f36aa-e6db-49c1-8b4c-66eac1997e64