Fix #243

Cleanup corrupt submodules and add them again via update_plugins.py script

sources_non_forked/vim-gitgutter/test/test

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+VIM="/Applications/MacVim.app/Contents/MacOS/Vim -v"
+
+$VIM -u NONE -U NONE -N                      \
+  --cmd 'set rtp+=../'                       \
+  --cmd 'let g:gitgutter_async=0'            \
+  --cmd 'source ../plugin/gitgutter.vim'     \
+  -S runner.vim                              \
+  test_*.vim                                 \
+  $*
+
+cat messages.log
+
+grep -q "0 errors, 0 failures" messages.log
+status=$?
+rm messages.log
+exit $status
+