Fixing issues with not detecting when LLSD XML parsing fails.  Changing most http error handlers to understand LLSD error responses.  Fleshing out most http error handler message spam.

Reviewed by Richard.

Checker: CHECKED_RETURN
Function: LLImageDecodeThread::update(unsigned int)
File: /indra/llimage/llimageworker.cpp

Propagate QAR-1814 to trunk.

Result of svn merge -r107256:107258 svn+ssh://svn/svn/user/phoenix/license_2009_merge into trunk. QAR-1165

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

this is a combined mergeback of the following branches as per QAR-841:
  maint-server/maint-server-1 (absorbed by maint-server-2)
  maint-server/maint-server-2
  maint-server/maint-server-3
  havok4/havok4-8
  havok4/havok4-9

yes dataserver-is-deprecated

Backport fixes from the 1.23 Server branch

* DEV-17223 remove the words slot and bets from dataserver.xml
* DEV-17351 Unable to set estate manager
* DEV-17138 users with god mode capabilities not able to join groups
* DEV-17785 SVC-2633: Floating Text which was set before Server Update 1.23 does not do linebreaks anymore but one line instead
* DEV-17863 Memory Leak in 1.23 (related to returning objects?)
* DEV-17804 CSR tool showing old data on Summary page
* DEV-17811 Ban list showing (???) (???) for names

dataserver-is-deprecated

dataserver-is-deprecated

QAR-689 - branch/havok4/havok4-7 r89805 is ready for merge back into release

dataserver-is-deprecated
for-fucks-sake-whats-with-these-commit-markers

QAR-242 merge of maintenance-5 (QAR-203)
* DEV-6548 Copy To Inventory fail to execute without any output feedback when Notecard has changes but not saved
* DEV-7600 Deleting someone else's object in god mode crashes sim
* DEV-5329 LLSD parsers should determine and set maximum parse sizes
* DEV-7473 Resolve instant message crash report
* DEV-2904 Presence Issues not (apparently) caused by scripted attachments
* DEV-7083 Investigate Null Folder IDs Bug that caused 470K inventory items with Null Folder IDS on the Grid
* DEV-2865 Textures/Snapshots in a notecard are opened again when you click copy to inventory.
* DEV-6612 VWR-3290: Linux scons build script doesn't work with distcc
* DEV-8002 c++ llsd notation parser accepts malformed data
* DEV-8001 c++ xml parse returns wrong number of elements parsed
* DEV-8089 Double delete in statc structured data parse functions
* DEV-5326 Any viewer can request presence information for any agent
* DEV-2378 python service builder does not sort query string
* DEV-7872 Block teleport off teen grid sub-estates like Schome Park / Open University
* DEV-4465 Add a "logfile" command line option to the sim to create log files

Result of svn merge -r71162:71205 svn+ssh://svn/svn/linden/branches/new-license into release. only changes files which are not deployed or the comments section of code.

(only inside indra)

(josh) Original log message was:
   svn merge -r64837:65485 svn+ssh://svn.lindenlab.com/svn/linden/branches/maintenance
bos updated it to be:
   svn merge -r64837:65269 svn+ssh://svn.lindenlab.com/svn/linden/branches/maintenance
However, it appears it actually was:
   svn merge -r64837:65485 svn+ssh://svn.lindenlab.com/svn/linden/branches/maintenance
... missing some file additions.

merge -r 57761:57967 im-email-session-3, removes database load from IM to email session tracking, introduces new format for email return addresses

corrected, removed, and updated comments throughout the code to be more useful. no code changes. SL-13762