* g++.dg/abi/rtti3.C, g++.dg/abi/thunk4.C: Skip for *-*-mingw* and
	*-*-cygwin.
	* g++.dg/cpp0x/lambda/lambda-mangle.C: Disable weak symbols tests
	for *-*-mingw* and *-*-cygwin.
	* g++.dg/opt/vt1.C: Skip for *-*-mingw* and *-*_cygwin.
	* g++.dg/template/spec35.C: Disable weak symbol test for
	*-*-mingw* and *-*-cygwin.

	PR testsuite/31342
	* gcc.target/i386/pic-1.c: Skip for *-*-mingw* and *-*-cygwin.

From-SVN: r153506