compat.exp (compat-get-options-main, [...]): Handle dg-prune-output in source file.

compat.exp (compat-get-options-main, [...]): Handle dg-prune-output in source file.

2009-03-19  Jakub Jelinek  <jakub@redhat.com>
	    Janis Johnson  <janis187@us.ibm.com>

	* lib/compat.exp (compat-get-options-main, compat-get-options):
	Handle dg-prune-output in source file.
	* lib/gcc-defs.exp (${tool}_check_compile): Process prune requests.
	* gcc.dg/compat/struct-layout-1_main.c: Use dg-prune for warning.
	* gcc.dg/compat/struct-layout-1_generate.c: Use -Wno-abi, prune
	two warnings.

Co-Authored-By: Janis Johnson <janis187@us.ibm.com>
From-SVN: r144971