tests: sort import lines in dumbhttp.py
This series is an attempt to enable import-checker.py for tests/**.py, but
it turned out not easy. Since many tests have been ported to absolute_import
without the coverage, import-checker.py reports a lot of errors right now.
Should we enable import-checker.py without fixing all of them so that we
won't get more errors?
--- a/tests/dumbhttp.py Mon Apr 04 01:59:57 2016 +0100
+++ b/tests/dumbhttp.py Sun Apr 03 19:40:05 2016 +0900
@@ -6,10 +6,10 @@
Small and dumb HTTP server for use in tests.
"""
+import BaseHTTPServer
+import SimpleHTTPServer
import optparse
-import BaseHTTPServer
import signal
-import SimpleHTTPServer
import sys
from mercurial import (