Add system libs in msvc/wx/setup.h too.

This makes it possible to use static build of wx from VC++ by just
including its headers. Even though it's common to have these libs in
your settings, it's not always the case.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63920 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775