GIT v1.3.0-rc4

I've merged everything I think is ready for 1.3.0, so this is
the final round -- hopefully I can release this with minimum
last-minute fixup as v1.3.0 early next week.

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

GIT-VERSION-GEN

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v1.3-rc3.GIT
+DEF_VER=v1.3-rc4.GIT
 
 # First try git-describe, then see if there is a version file
 # (included in release tarballs), then default