Port Terrasolid Reader
Catch up TerraSolid PR to current master
build terrasolid
Merge branch 'master' into move-terrasolid-driver

Conflicts:
	src/CMakeLists.txt
	src/StageFactory.cpp
	test/unit/CMakeLists.txt
catch up Terrasolid PR to master
Merge pull request #609 from PDAL/move-terrasolid-driver

Port Terrasolid Reader