Added a script to extract wall file info

At the moment, this sets the verbose flag to True and there is
no option to change it.  The long term solution would be to
use argparse and add handling for a verbose flag.  I added this
as issue #24.
Added a verbose flag option
Added a verbose flag option
Added more verbose handling, variable metadata support and robustness

Mostly this adds support for the verbose flag recently introduced
in some of the helper functions.  This was, in turn, driven
by wanting to get as much output as possible from the initial
wall_info script.

In addition, the wall_info effort meant adding support to extract
variable metadata.

Finally, I added some code to handle poorly formatted walls
by generating (non-optional) warning messages.  The goal is
to help those who are writing wall files understand any
incompatibilities rather than just crashing or throwing
a cryptic exception.
Merge branch 'master' of github.com:xogeny/recon