[pdal] RiVLib plugin

[Howard Butler]

> On Jul 22, 2015, at 2:43 PM, Robert Dzur <rdzur at bhinc.com> wrote:
> 
> Hello,
> 
> In attempting to install the latest PDAL development version with homebrew, and I run into what appears to be some cmake configuration issues in that   I get a message about:
> 
> * RiVLib plugin , read data in the RXP format
> * Python plugin , add features that depend on python
>  
> Just prior to the error message:  -- Configuring incomplete, errors occurred!
> Wondering if there might be a work around for this situation?

Both of these should be completely optional.  It might be that the homebrew recipe needs some updating. I will take a look and get back to you.

Howard