Added several UDMF properties to ZDoom configuration.

Added -strictpatches command line parameter to indicate strict patches loading for the WAD file loaded from command line
Added -resource command line parameter to specify additional resources for the WAD file loaded from command line (see cmdargs.txt for more information!)

Added -nosettings command line parameter which allows starting Doom Builder with only the default settings (no user settings) but any settings you make will not be saved (to protect your original settings).

@ Improved UDMF test map (slopes, 3d floors, colored lighting)

Exposed more DECORATE information to plugins and Things now have an Actor property (ActorStructure) when they are loaded from DECORATE
Added two new type handlers that can be used in UDMF ('Thing Type' and 'Thing Class')
Polished the browse icons and browse buttons.
Added more events for plugins to intercept.

- added more handling for 'invalid' UDMF types to cast them to the correct type

- added release checklist

- fixed curve lines menu item in linedefs menu
- changed the test map drop down menu (nomonsters option is now in the menu instead of a seperate button)

- edit selection mode now shows a rectangle selection that covers also the thing sizes
- fixed right-click to start drawing mode from linedefs mode
- fixed floor and ceiling texture coordinates in both classic modes and visual mode

removing a vertex that has exactly 2 linedefs attached now leaves one linedef connected to the other linedef's vertex. also removed some unneeded template code.

working on generalized compiler interfacing (nodebuilders work again, now through a generalized compiler interface)