Give FileCheck a hint on which ld to match. Under Windows, the preferred

match was the ld.elf_so that should be matched in a second step. Add one
of the ever-present-but-irrelevant-for-this-test arguments to the
pattern to force matching the right argument.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@271893 91177308-0d34-0410-b5e6-96231b3b80d8