Change tests to use clang -cc1...

test/SemaObjC/ContClassPropertyLookup.m

test/SemaObjC/DoubleMethod.m

test/SemaObjC/access-property-getter.m

test/SemaObjC/alias-test-1.m

test/SemaObjC/alias-test-2.m

test/SemaObjC/argument-checking.m

test/SemaObjC/at-defs.m

test/SemaObjC/atomoic-property-synnthesis-rules.m

test/SemaObjC/attr-cleanup.m

test/SemaObjC/attr-deprecated.m

test/SemaObjC/attr-malloc.m

test/SemaObjC/attr-objc-exception.m

test/SemaObjC/attr-objc-gc.m

test/SemaObjC/bad-receiver-1.m

test/SemaObjC/block-attr.m

test/SemaObjC/block-explicit-return-type.m

test/SemaObjC/block-ivar.m

test/SemaObjC/blocks.m

test/SemaObjC/call-super-2.m

test/SemaObjC/catch-stmt.m