svn merge -r103586:104391 svn+ssh://svn.lindenlab.com/svn/linden/qa/maint-server/maint-server-4-sandbox-r103546

Picking up the following bug fixes:
DEV-19747 Flooding sim with bogus animation packets crashes sim
DEV-20978 Investigate baked avatar texture caching in simulator - ids not properly stored
DEV-5316 llsd-get .../runtime/top and "World:Region/Estate:Debug:Get Top Scripts" broken
DEV-18807 SVC-2596: Script dataserver events become permanently blocked until sim restart
DEV-19108 SVC-2616: Torus refuses to accept 180 degree texture rotation
DEV-9944 Simulator crash failing to write simstate to file .tmp.tmp
DEV-21439 Configure VFS file size via simulator.xml