Interact with VCS directly when checking whole directory removal.

Use VCS functions to check whether the cached/to-be-committed version of
the working tree contains the particular directory instead of using the
local working tree. Thanks to that, the functions no longer care about
stray files.

sunrise-commit

@@ -69,11 +69,9 @@ find_repo() {
 # from the repo.
 is_whole_dir_removed() {
 	if [ ${SC_VCS} = svn ]; then
-		local flist
+		[ -z "$(svn status --depth=empty -- "${1}")" ]
-		flist=$(find "${1}" \( -name '.svn' -prune -o ! -name "${1}" -print \))
-		[ -z "${flist}" ]
 	elif [ ${SC_VCS%-svn} = git ]; then
-		[ ! -e "${1}" ]
+		[ -z "$(git ls-files -c -- "${1}")" ]
 	fi
 }