Log Message:
textproc: Add py-demjson

The "demjson" module, and the included "jsonlint" script, \ 
provide methods
for encoding and decoding JSON formatted data, as well as checking JSON data
for errors and/or portability issues. The jsonlint command/script can be
used from the command line without needing any programming.

Although the standard Python library now includes basic JSON support (which
it did not when demjson was first written), this module provides a much more
comprehensive implementation with many features not found elsewhere. It is
especially useful for error checking or for parsing JavaScript data which
may not strictly be valid JSON data.