* Makefile.in (CC): Define.

	* Makefile.in (CC): Define.
	(CXX): Move definition, change from g++ to gcc.
	(EXPECT, RUNTEST): Copy definitions from top level Makefile.in.
	(RUNTEST_CC, RUNTEST_CFLAGS): Remove.
	(RUNTEST_CXX, RUNTEST_CXXFLAGS): Remove.
	(CC_FOR_TARGET, CXX_FOR_TARGET): Copy from top level Makefile.in.
	(.cc.o): Comment out.
	(testdir): Remove.
	(site.exp): Don't create testdir or set tmpdir.
	(check): Run checks even if not running native.  Use CC_FOR_TARGET
	instead of RUNTEST_CC, and likewise for CXX.
	(cdtest targets): Comment out.
	* config/solaris2.mh (HOSTING_LIBS): Only mention crtend.o once.
	* cdtest-bar.cc, cdtest-foo.cc, cdtest-foo.h: Remove.
	* cdtest-main.cc, cdtest.exp: Remove.