README: Describe tests in source directory.

README: Describe tests in source directory.

	* gcc.test-framework/README: Describe tests in source directory.
	* gcc.test-framework/test-framework.awk: Handle dg- tests.
	* gcc.test-framework/test-framework.exp: Handle dg- tests.
	* gcc.test-framework/dg-bogus-exp-P.c: New test.
	* gcc.test-framework/dg-bogus-exp-XF.c: New test.
	* gcc.test-framework/dg-do-assemble-exp-P.c: New test.
	* gcc.test-framework/dg-do-compile-exp-P.c: New test.
	* gcc.test-framework/dg-do-link-exp-P.c: New test.
	* gcc.test-framework/dg-do-run-exp-P.c: New test.
	* gcc.test-framework/dg-dot-run-exp-P.c: New test.
	* gcc.test-framework/dg-dot-run-exp-U.c: New test.
	* gcc.test-framework/dg-dox-run-exp-XF.c: New test.
	* gcc.test-framework/dg-error-exp-P.c: New test.
	* gcc.test-framework/dg-error-exp-XP.c: New test.
	* gcc.test-framework/dg-excess-errors-exp-XF.c: New test.
	* gcc.test-framework/dg-excess-errors-exp-XP.c: New test.
	* gcc.test-framework/dg-output-exp-P.c: New test.
	* gcc.test-framework/dg-output-exp-XF.c: New test.
	* gcc.test-framework/dg-warning-exp-P.c: New test.
	* gcc.misc-tests/dg-1.c: Remove.
	* gcc.misc-tests/dg-2.c: Remove.
	* gcc.misc-tests/dg-3.c: Remove.
	* gcc.misc-tests/dg-4.c: Remove.
	* gcc.misc-tests/dg-5.c: Remove.
	* gcc.misc-tests/dg-6.c: Remove.
	* gcc.misc-tests/dg-7.c: Remove.
	* gcc.misc-tests/dg-8.c: Remove.
	* gcc.misc-tests/dg-9.c: Remove.
	* gcc.misc-tests/dg-10.c: Remove.
	* gcc.misc-tests/dg-11.c: Remove.
	* gcc.misc-tests/dg-12.c: Remove.
	* gcc.misc-tests/dg-test.exp: Remove.

From-SVN: r94550