[PECOFF] Support -tsaware:no command line option.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@186957 91177308-0d34-0410-b5e6-96231b3b80d8
Avoid using C-style cast and remove unnecessary LL prefix.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@186960 91177308-0d34-0410-b5e6-96231b3b80d8