GIT 0.99.7c

Contains the following post-0.99.7b fixes:

 - rsh.c string termination fix by H. Peter Anvin
 - further fetch fixes by Sergey Vlasov
 - diff-tree documentation by Robert Watson.
 - 'git diff --cached' synonymous to 'git diff --cached HEAD'.
 - subprocess.py licensing status clarification.

Signed-off-by: Junio C Hamano <junkio@cox.net>

1. 667bb59 [PATCH] cleanup of in-code names by Alexey Nezhdanov · 20 years ago
2. 3c249c9 Add "get_sha1()" helper function. by Linus Torvalds · 20 years ago
3. 3407bb4 Add "unpack-file" helper that unpacks a sha1 blob into a tmpfile. by Linus Torvalds · 20 years ago