[Take 2] Make "git shortlog" understand raw logs

This is a nicer fix for git-shortlog being unable to handle the raw log 
format. Just use a more permissive regexp instead of doing two nearly 
identical ones.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/git-shortlog.perl b/git-shortlog.perl
--- a/git-shortlog.perl
+++ b/git-shortlog.perl

@@ -108,7 +108,7 @@ sub changelog_input {
 		if ($pstate == 1) {
 			my ($email);
 
-			next unless /^Author: (.*)<(.*)>.*$/;
+			next unless /^[Aa]uthor:? (.*)<(.*)>.*$/;
 	
 			$n_records++;