Add a debug setting which promises to restore my sanity in the face of

Etags and browser caching.  And use it.

* lib/debug.py
  (DISABLE_ETAGS):  New.

* lib/viewcvs.py
  (check_freshness): If DISABLE_ETAGS is set, never report that the
    page is fresh.


git-svn-id: http://viewvc.tigris.org/svn/viewvc/trunk@863 8cb11bc2-c004-0410-86c3-e597b4017df7

lib/debug.py

@@ -21,6 +21,7 @@ import sys
 
 SHOW_TIMES = 0
 SHOW_CHILD_PROCESSES = 0
+DISABLE_ETAGS = 0
 
 if SHOW_TIMES:
 

lib/viewcvs.py

@@ -588,6 +588,10 @@ def _repos_pathtype(repos, path_parts):
   return type
 
 def check_freshness(request, mtime=None, etag=None, weak=0):
+  # See if we are supposed to disable etags (for debugging, usually)
+  if debug.DISABLE_ETAGS:
+    return 0
+  
   request_etag = request_mtime = None
   if etag is not None:
     if weak: