[PATCH 1/2]: amendment

Hi,

I completely forgot that with a global config, it makes sense to have 
aliases even if we are not in a git repository.

So, in git.c, handle_alias() the "if (nongit)" makes no sense any longer. 
If I have to revise the patch anyway, I will include the change, but if 
you decide to take it, please change that.

Ciao,
Dscho

P.S.: There might be other users (such as git-peek-remote) who want that 
change, too.