svn merge -r 80990:81720...

svn merge -r 80990:81720 svn+ssh://svn.lindenlab.com/svn/linden/branches/Branch_1-19-1-Server --> release

Reg-api merge is the bulk of the diff, it's actually not so bad. Change summary:

* Fixed a bogus HTTP/curl warning and cleaned up one line of code for clarity
* extra '.' in FQDN names/extra . in the non-FQDN case, which is a syntax error
* DEV-11542 Joining two parcels destroys search relevance of a store.
* Fixed bug preventing users who turn off email notification from getting offline messages at login
* Updated version numbers
* New reg-api (w00t!)
* DEV-11427 / DEV-11399 - LSL slowdown from strncpy buffer-clearing overhead
* DEV-11359 Hide music URL should be on by default
* Update to r89 of eventlet
* QAR-347 "SEC-28 - It is possible to rez any object, whether you own it or not."
* QAR-336 Additional logging to track teleport failures
* DEV-11397 - use the slave db for read queries for crons
* Fix to turn off PEAR debug logging
* Copied code from eventlet.coros to make an Updater that won't die so easily. (multiagent-chat)
* Various chicanery with dir-find query
* Emergency fix for bad FORCE INDEX on user table when actually searching on the user_last_name table
* DEV-11124 : Modify backbone service proxy so that we know which web-ds host a dataservice is actually called
* Fixes for DEV-5883 : Test improved-instant-message