Add %run to tests that used %T/name.exe

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@208744 91177308-0d34-0410-b5e6-96231b3b80d8
Enable CAN_EXECUTE_TESTS if an EMULATOR is provided

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@208745 91177308-0d34-0410-b5e6-96231b3b80d8
Add target flags to ubsan tests

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@208746 91177308-0d34-0410-b5e6-96231b3b80d8