OgreImporter: Started cleanup and refactoring. Aim is to get this into a shape that its easy to read and understand before I start making any new features.
OgreImporter: Continue cleanup.
OgreImporter: Remove unnecessary m_currentX state. Improve and clean OgreMaterial: split tech/pass/texture_unit to their own functions. Document missing features and potential bugs. Improve the original authors 'detection from texture filename' logic (enabled with AI_CONFIG_IMPORT_OGRE_TEXTURETYPE_FROM_FILENAME). Add generic detection from texture unit name, which is commonly used in Ogre materials.
OgreImporter: Rewrote documentation for AI_CONFIG_IMPORT_OGRE_MATERIAL_FILE and AI_CONFIG_IMPORT_OGRE_TEXTURETYPE_FROM_FILENAME to reflect the current logic. And to be honest the earlier one was very confusing english and was not very clear what is happening with these config options.
OgreImporter: Rename .hpp to .h. Shuffled parsing utils to a single file.
OgreImporter: Forgot to rebuild after filename changes so broke the build. Fix includes, add include guards and ASSIMP_BUILD_NO_OGRE_IMPORTER to missing places.
OgreImporter: Cleanup and bugfixes to OgreSkeleton.cpp. This was actually so badly broken that it did nothing if the mesh referenced a binary skeleton. Now logs a warning for this case and tries to read from .skeleton.xml like the original author intended it to work. The assimp skeleton is still broken, I will fix that later on when I (eventually) get to that part of the code.
OgreImporter: Cleanup skeleton related code and code that populates the assimp scene. Tested skeleton/animation imports and it seems to work correctly now.
OgreImporter: One more function cleanup.
Try fix travis ci produced build errors on gcc and clang.
OgreImporter: Remove unnecessary comments.
OgreImporter: Added brackets for all conditional etc. statements, even when there is a single line as requested by @kimkulling. I'm still not sure about the coding convention but looked for guidance in the obj importer code. Now newline before { if only one line and no else/else if after it, othewise a newline before it.
Merge pull request #266 from jonnenauha/ogre-enhancements

Ogre importer cleanup, improvements and bug fixes