Prevented looking up incorrect object handles.

Previously, dAtoi would be called on arbitrary strings delimited
only by the / character. Now, Sim::findObject actually checks that
object handles (strings starting with a digit) actually only contain
digits or slashes.
Fix for unexpected behavior described in issue #704
deprecated functionality. T3D handles this in the reflector class.
Added Outpost testing level by Azaezel.
Merge pull request #807 from eightyeight/az_outpost

Added Outpost testing level by Azaezel
Fixed OPCODE problems with x64.
Merge pull request #811 from LuisAntonRebollo/fix_opcode_x64

Fixed OPCODE problems with x64.
Fixed minor issues with Outpost level.

 * Black spots caused by wrongly named images.
 * HDR settings tweaked to be a bit brighter.
Merge pull request #813 from eightyeight/fix-outpost-terrain

Fixed minor issues with Outpost level
Fixed Full template art a bit.

Player can now swim properly, and the physical zone elevator is a bit
more helpful (i.e. it sends you to the landing rather than leaving you
floating in midair). Fiddled some more with PostFX settings.
Bump version to 3.6.1.
Merge pull request #818 from eightyeight/fix-art

Fixed Full template art a bit
Merge pull request #817 from eightyeight/version-3.6.1

Bump version to 3.6.1
Merge pull request #819 from GarageGames/development-3.6

Version 3.6.1
Merge pull request #148 from eightyeight/simfindobject

Prevented looking up incorrect object handles
Merge pull request #721 from Azaezel/CubemapCleanup

deprecated functionality. T3D handles this in the reflector class.
Merge pull request #705 from andr3wmac/ConsoleReturnFix

Fix for unexpected behavior described in issue #704