Implicitly link msimg32.lib in when using MSVC and add it to MinGW (and Borland) makefiles. This should have been part of r77029. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77039 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775