silence annoying warning now that boost is not a SYSTEM include again
working drivers.soci.writer for #180
don't run soci test if no soci around
Merge branch 'master' into issues/180-sqlite-driver
Merge branch 'master' into issues/180-sqlite-driver

Conflicts:
	src/CMakeLists.txt
Merge pull request #180 from PDAL/issues/180-sqlite-driver

Update drivers.soci.writer to write into sqlite databases