Major change.I put all database dependent parts in their directories and kept the data only in common.This is needed for the database independence and pl(pg)sql differences.
fixed issues.tcl. used db_map to handle dynamic queries. rewrote order_by bind variable to use a normal variable with a switch statement to verify the contents. for some reason the bind variable version kept enclosing the order_by variable in ' ' which is not correct.
- changed the XML parsing throughout to go through a simplified API to later upgrade XML parsing in a central place.- updated support for ns_xml 1.4, and added work-arounds for previous versions.- added installer check for ns_xml compatibility at boot time.
