Add check to prevent the return of a wrong value when key is NULL_KEY
Merge branch 'master' of /home/opensim/src/opensim
Fix problem where moving an object to another region on the same simulator was failing, with the object returning to its original position.

Root cause was that PrimLimitsModule was not properly handling the case where the parcel it was asked to check was outside the current region's bounds.
If this is the case, we can abort the check since the receiving region will perform it.
Added a regression test for this case.
minor: disable logging in recently added scene object crossing tests and remove some unnecessary test config
minor: Only calculate fetched usedPrims and simulatorCapacity info in PrimLimitsModule.CanObjectEnter() when we know for sure that we need them.
Console command to rename Estate
remove EstateManagmentCommands.m_commander that has been unused for some time
minor: comment out currently unused RegionCombinerModule.LogHeader
Removing warning from SceneObjectLinkingTests.TestLinkDelink2SceneObjects() by actually checking whether delinked grp3 is not null
fix orphaned code in sun module per mantis 7068
Added assets service method AssetsExist(), which returns whether the given list of assets exist.

This method is used to optimize sending assets with embedded assets: e.g., when a Hypergrid visitor takes an item into the inventory.
Fixed the "Update Asset" handler: it was looking for the Asset ID in the wrong parameter.

This doesn't actually matter because the "Update Asset" operation isn't implemented in AssetsServer. But still, the handler should do the right thing...
Fixed last-resort sending of error response (HTTP 500) when an error occurs while handling a request.

The previous code didn't actually send the response, so the caller was stuck until the timeout (100 seconds).
Better string matching when searching for REST handlers: must match an entire path component (ending with '/' or a similar character).

For example, these should match: "/assets" and "/assets/12345", but these shouldn't match: "/assets" and "/assets_exist".
Added System.Core reference to MSSQL
Made the SQLite unit tests work on Windows (sqlite3.dll wasn't being loaded)
Fixed AssetsExist in SQLite
Made GetScenePresence() case-insensitive when searching by user name. This makes it easier to use console commands such as "show appearance".
String matching in REST handlers: must allow '-' as a separator, because the "/map" handler uses it
Fix bug where crossing to a neighbouring region and back again would trigger an exception, and a second recross would stop the user moving until relog

Also fixes an issue where sitting avatar counts became inaccurate after any cross.
Part of the problem was due to cloning code using MemberwiseClone() but not resetting certain collection structures.
Adds regression test for this case.
In relation to http://opensimulator.org/mantis/view.php?id=7050