[pdal] compile pdal with Python support

[Howard Butler]

> On Dec 2, 2015, at 1:51 AM, Luca Delucchi <lucadeluge at gmail.com> wrote:
> 
> On 1 December 2015 at 16:01, Howard Butler <howard at hobu.co> wrote:
>> 
>> I always found this behavior of GDAL rather frustrating and hard to control. If you're using Python inside of a virtual environment or something, it's difficult to know at cmake time where to install things. You end up manually installing anyway. That's why the "use PDAL from Python" code is just an extension that can be easy_install'd at the moment.
>> 
> 
> ok, but with pip we have this error
> 
> [lucadelu at giscluster ~]$ sudo pip install PDAL
> Collecting PDAL
>  Could not find a version that satisfies the requirement PDAL (from versions: )
> No matching distribution found for PDAL
> 

What does pdal-config --version print? The Python setup.py uses that to determine version information, but maybe something isn't quite right.