Fixed flush stdout
Fixed cmp_boxes_safe for combination of DV_STRING and DV_UNAME
Fixed DB.DBA.RDF_DATATYPE_OF_xxx() procedures
Fixed comment
Fixed write past end of buffer
Fixed issue with scalar
Added optimization for top
Fixed support for mixed types in concatinate
Fixes for RDF graph security

* Added function for re-loading RDF graph security
* Added function for grouping cache
* Minor fixes