[PATCH] mergetool: export variables for use by custom mergetools

[David Aguilar <davvid@gmail.com>]

The MERGED, BACKUP, LOCAL, REMOTE and BASE variables were not being
exported from the git-mergetool.sh script.  This prevented custom
mergetools from being able to use them.

We now export them so that arbitrary mergetools can easily interact
with git mergetool.

This problem was Reported-By: Evgeny <evgeny.zislis@gmail.com>

Signed-off-by: David Aguilar <davvid@gmail.com>
---
 git-mergetool.sh |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/git-mergetool.sh b/git-mergetool.sh
index fcdec4a..c4f31ee 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -146,6 +146,12 @@ merge_file () {
     REMOTE="$MERGED.REMOTE.$ext"
     BASE="$MERGED.BASE.$ext"
 
+    export MERGED
+    export BACKUP
+    export LOCAL
+    export REMOTE
+    export BASE
+
     mv -- "$MERGED" "$BACKUP"
     cp -- "$BACKUP" "$MERGED"
 
-- 
1.5.5.1