BlenderDNA.h:

* Fix rethrow that would crash the program.
* QUESTION: am I throwing the right exception here.

COBLoader:
* catch exception by const ref
* fix equality checks using strncmp taht weren't actually checking equality

FBXMaterial: Catch exception by const ref (+ Debug log that it's done so)

FBXConverter: Rename local variables to avoid shadowing parameter

ImageExtractor: Remove duplicated/unreachable code

FBXConverter: Another shadowed variable fix

MD5Loader: 2 shadowed variables

IRRLoader: shadowed parameter

StepFileReader.cpp: Shadowed parameter

IRRLoader: remove empty else statement

STLExporter: Throw error instead of silently ignoring unimplemented option

Misc empty blocks removed or debug logging added

code/STLExporter.cpp

@@ -127,7 +127,7 @@ STLExporter::STLExporter(const char* _filename, const aiScene* pScene, bool expo
         mOutput.write((char *)&meshnum, 4);
 
         if (exportPointClouds) {
-
+            throw DeadlyExportError("This functionality is not yet implemented for binary output.");
         }
 
         for(unsigned int i = 0; i < pScene->mNumMeshes; ++i) {