[Rest2web-develop] Added an 'ip_addr' IPv4 address value test...

[Nicola L. <ni...@te...>]

...with code tests. Updated the code tests for mixed_list to include IP
addresses.

This ambiguity of code tests and value tests is tiring me. What if we
called "checks" the value tests, and just "test" the code tests? I'll
shoulder the burden of updating docstrings *and* documentation, if you agree.

-- 
Nicola Larosa - ni...@te...

Learning C after learning Python can be done via Pyrex. [...]
Learning Java after learning Python can be done via Jython. [...]
Learning Perl after learning Python can ... never mind. ;-)
 -- André Roberge, May 2005