difftool: add a skeleton for the upcoming builtin

diff --git a/.gitignore b/.gitignore
index 05cb58a3d4ef47295fa8ef02add44a0f0dd90d1f..f96e50ed40cc5283953ccbaa84694a9927070e42 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -76,6 +76,7 @@
 /git-init-db
 /git-interpret-trailers
 /git-instaweb
+/git-legacy-difftool
 /git-log
 /git-ls-files
 /git-ls-remote