* lib/g++-dg.exp (g++-dg-test): Add "repo" option.
	(dg-gpp-additional-sources): New function.
	(dg-gpp-additional-files): Likewise.
	* lib/g++.exp (additional_sources): New variable.
	(additional_files): Likewise.
	(g++_target_compile): Deal with them.
	* lib/old-dejagnu.exp: Remove.
	* g++.old-deja/old-deja.exp: Use dg.exp, not old-dejagnu.exp.
	* g++.old-deja: Revise all tests to use dg commands.

From-SVN: r66317