git-cl: change the git-cl-repo dir to git_cl_repo so that we can import

python does not seem to be able to import for a dir with dashes in it.

BUG=none
TEST=Ran git-cl help and verified it worked and new dir was created.

Review URL: http://codereview.chromium.org/3530012

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@61694 0039d316-1c4b-4281-b951-d872f2087c98

git-cl

@@ -4,7 +4,7 @@
 # found in the LICENSE file.
 
 base_dir=$(dirname "$0")
-repo="$base_dir/git-cl-repo"
+repo="$base_dir/git_cl_repo"
 url="http://src.chromium.org/git/git-cl.git"
 cur_url=$(git config -f "$repo/.git/config" remote.origin.url)
 
@@ -26,10 +26,10 @@ fi
 
 if [ ! -f "$repo/git-cl" ]; then
   git clone $url $repo -q
-elif [ ! -e "$base_dir/git-cl-repo/.git" ]; then
-  echo "$0: $base_dir/git-cl-repo does not appear to be a git repo"
+elif [ ! -e "$repo/.git" ]; then
+  echo "$0: $repo does not appear to be a git repo"
 elif [ "X$DEPOT_TOOLS_UPDATE" != "X0" ]; then
-  (cd "$base_dir/git-cl-repo"; git pull -q)
+  (cd "$repo"; git pull -q)
 fi
 
 $repo/git-cl "$@"