To run the tests, we no longer need to have run "make" first.
Instead, "make test" requires: shared.gpr and the W3C tests, and will
only recompile the sources found in */test/*, not the code of XML/Ada itself.
So will "make run_test".
A new target "run_test_and_setenv" was added for developers who need to
test the local build.
NA17-039
git-svn-id: svn+ssh://svn.eu.adacore.com/Dev/trunk/xmlada@233386 936e1b1b-40f2-da11-902a-00137254ae57