plugin-support.exp: New file containing support procs for plugin testcases.

plugin-support.exp: New file containing support procs for plugin testcases.

2009-05-06  Le-Chun Wu  <lcwu@google.com>

	* lib/plugin-support.exp: New file containing support procs for
	plugin testcases.
	* lib/target-supports.exp (check_plugin_available): New proc.
	* gcc.dg/plugin/plugin.exp: New driver script for gcc testcases.
	* gcc.dg/plugin/selfassign.c: New plugin source file.
	* gcc.dg/plugin/self-assign-test-1.c: New test.
	* gcc.dg/plugin/self-assign-test-2.c: Likewise.
	* g++.dg/README: Add description for plugin test.
	* g++.dg/dg.exp: Exclude plugin tests from the general test list.
	* g++.dg/plugin/plugin.exp: New driver script for g++ testcases.
	* g++.dg/plugin/selfassign.c: New plugin source file.
	* g++.dg/plugin/self-assign-test-1.C: New test.
	* g++.dg/plugin/self-assign-test-2.C: Likewise.
	* g++.dg/plugin/self-assign-test-3.C: Likewise.
	* g++.dg/plugin/dumb_plugin.c: New plugin source file.
	* g++.dg/plugin/dumb-plugin-test-1.C: New test.

From-SVN: r147185