Use a slightly tweaked version of WAF, which won't trigger an encoding problem on Windows

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@76345 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix compiler selection when building for Py34

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@76346 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775