Fix broken unittest for GnuLDDriver.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@186427 91177308-0d34-0410-b5e6-96231b3b80d8
[WinLink] Add /LargeAddressAware command line option.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@186428 91177308-0d34-0410-b5e6-96231b3b80d8