Added wxUSE_DC_CACHEING and associated code to wxMSW

Added EnableCache, CacheEnabled to wxDCBase
Added mask source args to DoBlit, Blit
Added cache testing code to dragimag sample
Added wxSystemOptions, regenerated makefiles


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10962 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/dcprint.cpp

@@ -373,6 +373,8 @@ bool wxPrinterDC::DoBlit(
 , wxCoord                           vYsrc
 , int                               nRop
 , bool                              bUseMask
+, wxCoord                           xsrcMask
+, wxCoord                           ysrcMask
 )
 {
     bool                            bSuccess = TRUE;