[PATCH] http admin commands

This patch improves the http-based admin commands and fixes some quirks:

1. It adds 2 new commands: add-smsc and remove-smsc that allows for  
dynamic adding/removing of smsc's without restarting kannel nor any  
other smsc bind.

2. start-smsc now reloads the smsc list from the config file, so you  
can stop-smsc and then start-smsc to reload the configuration. The  
only caveat is: do not change the id or admin-id (in that case you'll  
have to remove-smsc with the old id/admin-id and add-smsc with the new  
one instead).

3. Fixes a bug on stop-smsc and start-smsc. Before, you could start/ 
stop non-existant smsc's, and despite the request would be ignored,  
the interface would say that the smsc was stopped/started. Now it will  
return an error and log the reason.

4. Fixes a bug on the id/admin-id functionality when stopping/starting  
a group with 2 or more entries with the same id and different admin- 
id's. Before, the list would get corrupted when trying to start again,  
now it works as expected.

Userguide patch coming soon :)

Please review in the meantime.

Regards,
--
Alejandro Guerrieri
[email protected]