Merged the commit 313 "Added private members to AssetFolder class to support older compilers" from branch to trunk.

Added timer inits also to other constructor in RexObjectProperties

* Added a lock to NHibernate insert command
* Changed RexObjectProperties and ModrexObjects so that the object isn't saved immediatly to DB when properties are changed. Object is now saved after a second after first update to properties.

Added IModrexObjectsProvider interface.

Instead of modules fetching ModrexObjects class directly, modules should fetch IModrexObjectsProvider to access objects.

Merged os-udp branch to trunk.

* Modified SetRexPrimDataFromBytes so that the values are set to private members, not public. That way the TriggerChangedRexObjectProperties() is not called for every value.
* Modified SetRexPrimDataFromBytes to parse asset URIs also if they are present
* Added methods to NG ClientView so it can be used to recive and send URIs in RexObjectUpdates

* Renamed URLs to URIs in RexObjectProperties and RexMaterialsDictionary
* Added URIs to NHibernate mapping
* Added corresponding migration files to SQLite, MySQL and MSSQL

Added material urls to RexObjectProperties and to GetRexPrimDataToBytes. This may cause breakage somewhere.

* Renamed RexClientView.cs to RexClientViewBase.cs like the class already is.
* Added NG ClientView class, but that does not implement anything yet
* Added some Asset URL to RexObjectProperties
* Started modifying GetRexPrimDataToBytes so it can also send asset URLs to NG clients. This is work in progress and it doesn't affect to legacy clients.

first steps towards importing rex 0.4 databases
- import data from old databases using nhibernate and set values to new rexobjectproperties
- should work for prims and materials now, but is not automatic: requires manually changing migration tables and also altering database structure (AuthbuyerID for sqlite)

*Added Asset Preload feature. Don't know exactly how this should be tested. Seems to work at least.
*Added SendRexMeshAnimation and SendRexClientSideEffect to RexClientView
*Now sends preload assets first to user when sends all properties
*Also implemented rexAddInitialPreloadAssets and rexRemoveInitialPreloadAssets to Python module

- fixed AssetCache to IAssetCache in some overridden functions
- assettype now fetched for rexobjectproperties, using interface to avoid references to opensim

rexobjectpropertiescache: objects are loaded into memory, saved & sent over the network only when necessary. Also other changes which clean up the prop handling much.

Initial version of MediaURLs. Works per session for now.

*Added first implementation of SpawnActor to Python module.
*Removed bin/Debug folder and project files. You should not commit these. Use runprebuild script to create project and solution files.

*Added OnPythonClassChange event to detect when Python script is initialized
*Added methods to Load and Save objects from outside ModrexObjects.
*Removed RexObjectPart and RexObjectGroup, which are not used anymore.

Removed unneeded reference

Merged branch to trunk. Note this patch requires OpenSim patch (http://opensimulator.org/mantis/view.php?id=3012) to be applied.

*Added missing file
*Fixed problems caused by merging RexClientView