Added query abilities

Added messages in the 4000 range to allow plug ins to query auth for the owner list, secowner list, blacklist, group access enabled, and open access enabled.  Queries are of the form:

llMessageLinked (LINK_SET, AUTH_REQ_*********, ignored, some_key)

and are responded to with
llMessageLinked (SENDER_PRIM, AUTH_REP_*******, response data, same_key);

******* is replaced with OWNERS, SECOWNERS BLACKLIST, GROUP_ENABLED, or OPEN_ACCESS_ENABED.

for the lists, a comma delimited list is returned consisting of key, name pairs.  for group or open access either "0" or "1" is returned.