Re: log and diff family: honor config even from subdirectories

Junio,
 I think your patch is fine as a band-aid, but I wonder if we shouldn't 
just move the "setup_git_directory()" call out of init_revisions(), and 
pass it as an argument to init_revision(). Some of the callers have 
already done setup_git_directory() earlier for their own reasons anyway.

And from a quick look it looks like you missed the same bug happening in 
cmd_format_patch(), which calls git_config(git_format_config) before 
having done the setup.

I'd actually _like_ to do the setup unconditionally inside the git wrapper 
(early - to make sure that we don't have this bug), but some things (at 
least "init-db", "clone" and "ls-remote") are obviously not supposed to do 
it, since they work outside of a git directory. So either we need to do it 
in each builtin command separately, or we'd need to add a flag in the 
command descriptor array.

Any clever ideas?

		Linus