Big wxGL classes refactoring/cleanup:

1. Provide the same API, especially, but not limited to, wxGLCanvas and
   wxCLContext ctors (which were completely different in all ports)
2. Extracted common parts into wxGLCanvas/ContextBase classes
3. Deprecate the old API using implicitly created wxGLContext


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45388 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

build/msw/wx_gl.dsp

@@ -456,6 +456,10 @@ SOURCE=..\..\src\common\dummy.cpp
 # ADD BASE CPP /Yc"wx/wxprec.h"
 # ADD CPP /Yc"wx/wxprec.h"
 # End Source File
+# Begin Source File
+
+SOURCE=..\..\src\common\glcmn.cpp
+# End Source File
 # End Group
 # Begin Group "MSW Sources"
 
@@ -977,6 +981,14 @@ InputPath=..\..\include\wx\msw\genrcdefs.h
 SOURCE=..\..\include\wx\msw\glcanvas.h
 # End Source File
 # End Group
+# Begin Group "Common Headers"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\include\wx\glcanvas.h
+# End Source File
+# End Group
 # End Target
 # End Project