Run common and profile tests in cross-compiled builds.

Route target_cflags to common and profile tests

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@209248 91177308-0d34-0410-b5e6-96231b3b80d8
[ubsan] fix vptr test on ARM

Differential Revision: http://reviews.llvm.org/D3751

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@209249 91177308-0d34-0410-b5e6-96231b3b80d8