Fix Windows linker errors (LNK2005, LNK2019)
put DESDATA_LENGTH and DESDATA_OFFSET in metadata #568
Fix setting header system ID.
Merge pull request #566 from PDAL/windows-fixes

Fix Windows linker errors (LNK2005, LNK2019)
Add PDAL_ADD_TEST cmake macro

This macro can be used to add test executables to the project.
Especially useful for plugins.
Update PDAL_ADD_PLUGIN target_link_libraries

Remove PCL_LIBRARIES and add PDAL_LINKAGE.
fix copy/paste bug in drivers.las.writer for CreationDOY/CreationYear
Merge pull request #568 from PDAL/issues/568-desdata-offset-length

PDAL pipeline serialializtion does not contain DESDATA_OFFSET or DESDATA_LENGTH since Nitro
Merge pull request #573 from gadomski/plugin-marco-changes

Plugin marco changes
link PCL_LIBRARIES for PCL plugins after tweak in #573
Add dimension documentation.
Port icebridge driver to plugin framework
Port oci drivers to plugin framework
handle status of missing dependencies uniformly in plugins
Port p2g driver to plugin framework
remove icebridge from Drivers.hpp
Port sqlite driver to plugin framework
fix some typos, add PDAL_LINKAGE within pdal_macros and the pcl CMakeLists
Port pgpointcloud driver to plugin framework
only link PDAL in PDAL_ADD_DRIVER, link deps in the plugin CMakeLists file