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
Remove the passing of Options from the Stage constructor #482. Instead
use Stage::setOptions() at a time of your choosing before
Stage::prepare() is called to control when Options should be passed
into a stage.
Merge branch 'master' into las1.4

Conflicts:
	include/pdal/drivers/las/Writer.hpp
	src/drivers/las/Writer.cpp
	test/unit/SpatialReferenceTest.cpp
	test/unit/drivers/las/LasReaderTest.cpp