svn merge -r 86558:86977 svn+ssh://svn.lindenlab.com/svn/linden/branches/Branch_1-21-Server

* QAR-567 Deploy user-start-migration-again login.cgi and friends to agni
* DEV-14807 dir-places and dir-classifieds web-ds calls are failing
* DEV-9962 SVC-1428: Malformed llInstantMessage() gets sent to email, stuck in queue, and spammed to email at every login
* DEV-12696 Limit the number of group_notices in a group

NOTE: merge involved renames to the following to have "nq" extension
* indra/web/dataservice/sql/sequence/cart_items/update (actual change)
* indra/web/dataservice/sql/indra/select-dir-places-parcel (which was a no-op merge)

The magic words are: dataserver-is-deprecated