put DESDATA_LENGTH and DESDATA_OFFSET in metadata #568
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
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
Port MrSID driver to plugin framework
move plugin tests to plugins folder, add macro for adding plugin tests
Port NITF driver to plugin framework, having trouble with PDALRegister
symbols being exported
WITH_ changed to BUILD_PLUGIN_ for plugin options, add dependent options for whether or not to build certain tests (e.g., certain databases may not be available for testing)
reflect renamed options, update vagrant scripts
Port HexBin driver to plugin framework, fix BUILD_PLUGIN_NITF