add scale, offset, endianness information from the XML schema to the libpc::Schema when reading
add scale, offset, endianness information from the XML schema to the libpc::Schema when reading

radiantbluetechnologies/PDAL,mtCarto/PDAL,mpgerlek/PDAL-old,boundlessgeo/PDAL,lucadelu/PDAL,mpgerlek/PDAL-old,lucadelu/PDAL,lucadelu/PDAL,Sciumo/PDAL,verma/PDAL,DougFirErickson/PDAL,mpgerlek/PDAL-old,mtCarto/PDAL,boundlessgeo/PDAL,DougFirErickson/PDAL,jwomeara/PDAL,verma/PDAL,Sciumo/PDAL,mtCarto/PDAL,mpgerlek/PDAL-old,Sciumo/PDAL,radiantbluetechnologies/PDAL,verma/PDAL,jwomeara/PDAL,jwomeara/PDAL,jwomeara/PDAL,radiantbluetechnologies/PDAL,boundlessgeo/PDAL,verma/PDAL,verma/PDAL,Sciumo/PDAL,verma/PDAL,DougFirErickson/PDAL,mtCarto/PDAL,radiantbluetechnologies/PDAL,verma/PDAL,boundlessgeo/PDAL,DougFirErickson/PDAL,lucadelu/PDAL