* executable is no longer changed when up-to-date

check if install_name_tool must be invoked to update libfmodex.dylib path in executable
+ hack to build SDL using OS X SDK 10.9
- PPC architecture from FMOD library

lipo libfmodex.dylib -extract i386 -output libfmodex_i386.dylib && mv libfmodex_i386.dylib libfmodex.dylib