[Discuss-gnuradio] polymorphic type documentation (PMT)

[George Nychis]

Hi all,

I've added documentation on the new polymorphic type in GNU Radio, PMT, 
to the GNU Radio wiki:
http://gnuradio.org/trac/wiki/TypePMT

It has full details of many of the methods, how to use a PMT, how to 
assign it values, how to do type conversions, etc...

For more difficult PMT types (lists, dictionaries, etc...), I have added 
detailed sections.

This is all part of my attempt to make a better wiki...
http://gnuradio.org/trac/wiki/WikiStartNew

... I'm branching out from the m-block info, slowly but surely!

- George