The only thing in helpers.py that needed vars.py was the log stuff.

So put it in its own file.  Now it's safer to import and use helpers even if
you can't safely touch vars.

state.py

@@ -1,7 +1,7 @@
 import sys, os, errno, glob, stat, fcntl, sqlite3
 import vars
-from helpers import unlink, err, debug2, debug3, close_on_exec
-import helpers
+from helpers import unlink, close_on_exec
+from log import err, debug2, debug3
 
 SCHEMA_VER=1
 TIMEOUT=60
@@ -97,7 +97,6 @@ def _write(q, l):
         return
     global _wrote
     _wrote += 1
-    #helpers.log_('W: %r %r\n' % (q,l))
     db().execute(q, l)
 
 
@@ -106,7 +105,6 @@ def commit():
         return
     global _wrote
     if _wrote:
-        #helpers.log_("COMMIT (%d)\n" % _wrote)
         db().commit()
         _wrote = 0