Fixes lit test that doesn't fail on windows

long in linux 64 is 64 bits but is always 32 bits on windows.  The lit test was modified 
to use long long instead of long and check for 64-bit mangling.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193901 91177308-0d34-0410-b5e6-96231b3b80d8