More cast fun.
Two types of data.
install cmake 2.8.12 from PPA
include pgpointcloud bin directory
Merge pull request #585 from PDAL/issues/583-pgpointcloud-include

closes #583
Merge pull request #584 from PDAL/cmake-2.8.12-on-travis

install cmake 2.8.12 from PPA
Ignore generated Pgtest-Support file.
Merge pull request #591 from PDAL/issues/583-pgpointcloud-ignore

Ignore generated Pgtest-Support file.
Add base64-encoding of header extra data.
Merge pull request #593 from PDAL/cast

Cast
change the 'spatialreference' metadata item to be eHorizontalOnly and add a 'comp_spatialreference' metadata item for compount (vertical + horizontal) SRSs #571
Merge branch 'master' of github.com:PDAL/PDAL