[PECOFF] Win64 DLL entry function name is _DllMainCRTStartup.

Unlike Win32/x86, it has no "@12" suffix.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@206648 91177308-0d34-0410-b5e6-96231b3b80d8
Fix broken test.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@206651 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for building Sphinx documentation when being built inside LLVM source tree and using CMake.

Patch by Dan Liew <daniel.liew@imperial.ac.uk>!

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@206662 91177308-0d34-0410-b5e6-96231b3b80d8
[PECOFF] Handle line comment in module-definition file.

In .def files, ';' is the start of line comment.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@206831 91177308-0d34-0410-b5e6-96231b3b80d8