Update of SQL function calling interface to make it usable during initial bootstrap
- add sanity checks and produce error messages, when function args are incorrect. - do not throw errors in case it is called before the table acs_function_args was created (during boot) - added preliminary "list" call to acs::dc - added first *-init.tcl to be called after loading the *-proc.tcl files. - removed all references to the ::xo::* namespace