Merge branch 'pdal-info-summary' into pcl-tests
Merge branch 'clang-warnings' into pcl-tests
import PCL pipeline files from the PCL repo
tighten up the namespaces
remove debugging
cleanups on PCL tutorial

moved files into pal dir; cleanups on tutorial text; made examples
work; added examples as unit tests
cleaned up PCL docs

cleaned up filter docs, brought over json spec file from PCL repo
PCL test cleanup

renamed files for clarity; added unit tests for each filter

note: filter unit tests commented out, not yet passing
lint
added debugging support
all the PCL filter unit tests now working

except the APMF one (still to be debugged)

use #define USE_SLOW_TESTS for maximal testing goodness
namespace fix
PCL doc updates

updated example to match file/function names in the repo

added how-to-add-a-filter template instructions
Merge branch 'pcl-tests' #513
update hobu's cmake invocation
Merge branch 'master' of github.com:PDAL/PDAL