[PATCH] Add -k kill keyword expansion option to git-cvsimport - revised

Early versions of git-cvsimport defaulted to using preexisting keyword
expansion settings. This change preserves compatibility with existing cvs
imports and allows new repository migrations to kill keyword expansion.

After exploration of the different -k modes in the cvs protocol, we use -kk
which kills keyword expansion wherever possible. Against the protocol
spec, -ko and -kb will sometimes expand keywords.

Should improve our chances of detecting merges and reduce imported
repository size.

Signed-off: Martin Langhoff <martin.langhoff@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

Documentation/git-cvsimport-script.txt

@@ -11,7 +11,7 @@ SYNOPSIS
 --------
 'git-cvsimport-script' [ -o <branch-for-HEAD> ] [ -h ] [ -v ]
 			[ -d <CVSROOT> ] [ -p <options-for-cvsps> ]
-			[ -C <GIT_repository> ] [ -i ] [ <CVS_module> ]
+			[ -C <GIT_repository> ] [ -i ] [ -k ] [ <CVS_module> ]
 
 
 DESCRIPTION
@@ -38,6 +38,11 @@ OPTIONS
 	ensures the working directory and cache remain untouched and will
 	not create them if they do not exist.
 
+-k::
+	Kill keywords: will extract files with -kk from the CVS archive
+	to avoid noisy changesets. Highly recommended, but off by default
+	to preserve compatibility with early imported trees. 
+
 -o <branch-for-HEAD>::
 	The 'HEAD' branch from CVS is imported to the 'origin' branch within
 	the git repository, as 'HEAD' already has a special meaning for git.