adding correct valid architectures

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74709 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
correct base for carbon is 10.6 max

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74710 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775