Added vertex color support to the DXF loader, fixed a minor bugs. Coordinate system issue still unsolved.

Modified GenVertexNormals to take always the cross product of the first and the last normal of a face as face normal.
Material implementation for LWO - seems to work, but there are some issues with highly complex models.
Added some LWO test models
Cleaned up the ./test dir - converted some BMPs to JPG to save space,
Finished the matrial property list in jAssimp, some other changes, too. The Java part of the API should be working now.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@156 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/MDRLoader.cpp

@@ -226,7 +226,7 @@ void MDRImporter::InternReadFile(
 	file->Read( &mBuffer2[0], 1, fileSize);
 	mBuffer = &mBuffer2[0];
 
-	// validate the file header
+	// validate the file header and do BigEndian byte swapping for all sub headers
 	this->pcHeader = (BE_NCONST MDR::Header*)this->mBuffer;
 	this->ValidateHeader();
 }