svn merge -r 78407:79136 svn+ssh://svn.lindenlab.com/svn/linden/branches/Branch_1-19-0-Server --> release
svn merge -r 78407:79136 svn+ssh://svn.lindenlab.com/svn/linden/branches/Branch_1-19-0-Server --> release

* Fix for login script "active gestures" query causing massive inv db load
* DEV-9755 - calling llEscapeURL with an empty string crashes the simulator
* DEV-7007 - Block users who are limited to a subestate from connecting to any other subestate on login.
* Revert maintenance-4/indra/dataserver/lldatainventory.cpp r74862 due to bad query performance
* Make llEscape() behavior match previous behavior (and curl)
* DEV-9871 - Record of land sale transaction in 1.19.0 regions failing to update in World/CSR

NOTE: There are more changes after 79136 that need to get merged, but they haven't been through QA

gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm