minor: Make Robust.ini.example and Robust.HG.ini.example files consistent within themselves and OpenSim.ini.example by changing tabs to spaces, indenting, spacing.
Stop writing SizeZ config parameter for now when creating regions from console as it is unused/ignored, at least in core.
Remove unmaintained MSSQL support.

This has not been maintained for more than 2 years, is unimplemented for newer features (e.g. built-in groups) and has no core developers using it.
If somebody fixes these issues then it could be reinstated.
Avoid repeated lag-generating continuous attempts to retrieve HG service Urls in UMM if the initial request fails, possibly due to the home URL not being present

Instead, the failure information is effectively added to the memory cache (so no persistence over simualtor sessions).
A future improvement may be to invalidate negative cache results after some time has passed in case the failure was transient.
Looks to resolve http://opensimulator.org/mantis/view.php?id=7382
Merge pull request #9 from opensim/master

Merge in commits from Justincc