Makefile: install man page to $(git --man-path)
Makefile: install man page to $(git --man-path)

For consistency, install man page to the same path that git uses.

perlpunk/git-hub,perlpunk/git-hub,drbean/git-hub,perlpunk/git-hub,ingydotnet/git-hub,ingydotnet/git-hub,drbean/git-hub,ingydotnet/git-hub,drbean/git-hub