Removed unsafe use of \' from raster message. Ticket #2383

git-svn-id: http://svn.osgeo.org/postgis/branches/2.1@11691 b70326c6-7e19-0410-871a-916f4a2858ee
Fix variable datatypes in ST_Neighborhood(). Ticket #2384

git-svn-id: http://svn.osgeo.org/postgis/branches/2.1@11693 b70326c6-7e19-0410-871a-916f4a2858ee