Use 'w' instead of 'c' to represent the win32 mangling.

This change was requested to avoid confusion if we ever support non windows
coff systems.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@198939 91177308-0d34-0410-b5e6-96231b3b80d8
Enable -fuse-init-array for all AArch64 ELF targets by default, not just linux.


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@198940 91177308-0d34-0410-b5e6-96231b3b80d8