Don't include Common-Controls manifest in wxBase apps.

If only the non-GUI portions of wxWidgets are used, the dependency on
Microsoft.Windows.Common-Controls assembly shouldn't be automatically
added to Visual C++. Only do it when compiling GUI code.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73572 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775