Set the debug configuration to NATIVE_ARCH_ACTUAL because NATIVE_ARCH will always be i386
Move the "compile libgit2" script build phase to it's own target. By setting the script to run in it's own target we get the ability to clean it durning the clean phase (normal build phase scripts don't run during clean). This will be needed if someone has built GitX prior to this commit because the object files will be for the old architectures.
Also give an error if there is no git repository. This is from several questions I've received after someone has downloaded the source from github instead of cloning the project. The problem is that there is no submodule setting to update.
Uwe Hees