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. e72a7d4 Replace unsetenv() and setenv() with older putenv(). by Jason Riedy · 20 years ago
2. 113b947 Make "upload-pack" match git-fetch-pack usage by Linus Torvalds · 20 years ago
3. 319aae2 Increase the number of possible heads requested from git-upload-pack by Linus Torvalds · 20 years ago
4. 723c31f Add "git_path()" and "head_ref()" helper functions. by Linus Torvalds · 20 years ago
5. 75bfc6c Make git-fetch-pack actually do all the unpacking etc. by Linus Torvalds · 20 years ago
6. fb9040c Make git-fetch-pack and git-upload-pack negotiate needs/haves fully by Linus Torvalds · 20 years ago
7. def88e9 Commit first cut at "git-fetch-pack" by Linus Torvalds · 20 years ago