Removed the old SHAPE_ASSET macros
Implements AssetRef struct that acts as a universal wrapper for an templated AssetPtr and AssetId pair
Adds Type handling for AssetRef for ShapeAsset to unify handling in classes that utilize a shapeAsset, so assigning an assetPtr or an assetId will keep a record of the assignment in the event the assetPtr is invalid.
Update all classes that utilized the old SHAPE_ASSET macros to utilize the AssetRef struct and updated the class code to utilize it to provide much more clean and concise code that isn't blocked behind macro definitions
Added a new example class: shapeDatablockExample which allows render of a simple shape object utilizing a simple example datablock.
and from Marauder, hardened filename entry for con::evaluate/compileexec. if the string forwarded along is not a real filename, consider it an eval block
Ensured CodeBlock::smCurrentLineText is cleared at the end of execution
Tweaked and cleaned up the context lines passed along for further debugging data in the event of a script assert
fill out a %this var for sawnobjects prior to running the spawnscript command to give it acess to the spawner instance in addition to the spawned instance
* Made use of dStrIsEmpty in more locations (and fixed it :P)
* Removed commented-out code
* Corrected default params
* Fixed some console warning formats
* Removed tabs
* Corrected setExtent API
- Prevent stack corruption in a few places
- Use correct type in printfs
- Reduce type conversions in EngineApi & dAto*
- Fix compilation on GCC
- Tidy up code
