[Users] Max-Forward - new functionalities

[Bogdan-Andrei Iancu]

Hi all,

I just committed some new functionalities in maxfwd modules. Shortly:

    - more detailed reporting via the return code of the functions - 
success cases and error cases
    - new function - is_maxfwd_lt(x) - checks if the value of the MF is 
less then x. Is useful when you forward via a path with a known number 
of hops. Ex: avoid fwd to another proxy requests with MF=0 (which will 
be rejected for sure).

for more details, please see
    http://www.openser.org/docs/modules/1.0.x/maxfwd.html

regards,
bogdan