-Eliminate a few compiler warnings with MSVS2010.

git-svn-id: http://odamex.net/svn/root/trunk@4300 b0bcef46-2027-0410-bd56-ab726e9a1d04
- Fix message box warning "unknown font family: default" with wx2.9/3.0

git-svn-id: http://odamex.net/svn/root/trunk@4310 b0bcef46-2027-0410-bd56-ab726e9a1d04
- Fix build part deux

git-svn-id: http://odamex.net/svn/root/trunk@4312 b0bcef46-2027-0410-bd56-ab726e9a1d04