Given that roundup has now many translations 
available, I thought that it would be nice to make 
Roundup's web frontend checks the user browser 
language on-the-fly and displays the appropiate 
messages.

I'm including here one patch and a new file.

The new file is accept_language.py.  It parses the 
content of the language header sent by the browser and 
builds a list of language codes ordered by the user 
language preference suitable for gettext & co.  I 
copied the file under roundup's cgi directory.  It 
follows the spec at 
http://www.w3.org/Protocols/rfc2616/rfc2616-
sec14.html#sec14.4 (I hope!)
It uses a PriorityQueue to order by quality value. I 
may change that to python's heapq given that Roundup 
is requires python2.3 now.

The patch is for client.py.  It traps the 'Accept-
Language' request header and makes the tranlation 
object.  It's minimal but it works.  I think that more 
discussion and knowledge on roundup's cgi internals is 
needed before it gets into trunk.

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Deleting the patches as I'm going to update them.

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The new patch adds the HTTP_ACCEPT_LANGUAGE env to follow 
the CGI standard.  It also adds a config option to toogle 
this feature on.

The patch adds a method to the Client class.  I don't know 
if it's ok for you guys, I just tried to make the patch 
less invasive.

The file accept_language.py, which goes under the 
roundup/cgi directory, is a bit better than the previous 
version.

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BTW, the patch is against 2005/12/02 trunk.

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i've changed default value for web.use_browser_language
config setting from "no" to "yes".

checked in.  thanks a lot!