Add version check for MSVC 10

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73552 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Enable using jom in place of nmake in the wxMSW build

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73553 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix MSVCBuilder so it can pass an alternate make command to the Builder

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73554 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775