Reverting my changes from r4569 as they also break stuff by now. Will continue the discussion in http://irrlicht.sourceforge.net/forum/viewtopic.php?f=7&t=48940

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It uses again SMaterial::MaterialTypeParam instead of a hardcoded values and makes an exception when MaterialTypeParam is 0 (using it like 0.5 instead) to ensure it works by default. See http://irrlicht.sourceforge.net/forum/viewtopic.php?f=7&t=48940 for new discussion.

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- Moved setBasicRenderStates methods calls in shader based material renderers to the same place as in standard fixed pipeline material renderers (first lines of OnSetMaterial method).
- Fixed bug with texture states in OpenGL.

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Fix material deserialization. Empty textures were producing a texture named '0' (zero), which lead to annoying warnings all over the place. This empty string is hopefully safe everywhere.

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Add a CMatrix4::getRotationDegrees where you can pass the scale vector if you know it (faster and useful otherwise sometimes).


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Merged libpng 1.6.2 from vendor branch. Updated pnglibconf.h to latest predefined config file to catch up with latest setup requirements.

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Third round of override macro updates. Should have touched all functions stating virtual for now. This might still have missed some, as sometimes the virtual keyword is missing on derived functions. And some open points are also still under consideration, will be fixed in future.

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Fix syntax problems in Cg renderer base classes, which came from the override changes. Not yet tested, but should compile again.

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Exposed some more functions:
getArchiveName returning name (path) of archive
getColor and getColorHSL for color select dialog
get/setDoubleClickTime in device for setting the time offset necessary to have two separate clicks instead of a double-click

Removed deprecated getXJoint and getMS3DJoint functions

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Some fixes:
Added get/setCurrentRenderPass to scene manager (internally renamed, exposed)
Removed destructor from light scene node.
Removed getType calls from archive loaders (one file archives have this)
Removed some internal exposures and virtual attributes for protected classes

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Add override patch by hende, to check for proper deriving in the class tree. Added MSVC support for this feature, should work beginning with MSVC 2010

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Another try to fix the compilation issues. Still untested, as my MSVC is currently out of business...

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