Add 'ours' merge strategy.

This adds the coolest merge strategy ever, "ours".  It can take
arbitrary number of foreign heads and merge them into the
current branch, with the resulting tree always taken from our
branch head, hence its name.

What this means is that you can declare that the current branch
supersedes the development histories of other branches using
this merge strategy.

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

.gitignore

@@ -50,6 +50,7 @@ git-merge-base
 git-merge-index
 git-merge-octopus
 git-merge-one-file
+git-merge-ours
 git-merge-recursive
 git-merge-resolve
 git-merge-stupid

Makefile

@@ -89,7 +89,7 @@ SCRIPT_SH = \
 	git-tag.sh git-verify-tag.sh git-whatchanged.sh git.sh \
 	git-applymbox.sh git-applypatch.sh git-am.sh \
 	git-merge.sh git-merge-stupid.sh git-merge-octopus.sh \
-	git-merge-resolve.sh git-grep.sh
+	git-merge-resolve.sh git-merge-ours.sh git-grep.sh
 
 SCRIPT_PERL = \
 	git-archimport.perl git-cvsimport.perl git-relink.perl \

git-merge-ours.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+# Pretend we resolved the heads, but declare our tree trumps everybody else.
+#
+exit 0

git-merge.sh

@@ -14,7 +14,7 @@ usage () {
 
 # all_strategies='resolve recursive stupid octopus'
 
-all_strategies='recursive octopus resolve stupid'
+all_strategies='recursive octopus resolve stupid ours'
 default_strategies='resolve octopus'
 use_strategies=