git-1.5.4.2: small port bug, patch

[fulvio ciriaco]

Hallo,
git help <some_git_command>
does not work.
GIT_MAN_PATH is set incorrectly to /usr/local/share/man.

my solution is: patch patches/patch-Makefile
-mandir = $(prefix)/share/man
+mandir = $(prefix)/man/
Fulvio