Getting onto a patch from an anonymous poster, I've added some else branches to avoid too large redundant code parts after unconditional returns. These might at least raise some unwanted warnings, though I don't know why an error would occur.

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ColladMeshWriter: Unified functions in IColladaMeshWriterProperties some more. Can now export reflection and refraction and more flexible color-mapping (which means all effects can now be written). Also some fixed some schema-breaking when writing node-id's.

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- Add getOverrideFont to all elements which have setOverrideFont to have a consistent interface


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3861 dfc29bdd-3216-0410-991c-e03cc46cb475

Oops, I did accidentally use 'auto' in Irrlicht code. Better wait until c++0x usage is a little more common ;-)


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3860 dfc29bdd-3216-0410-991c-e03cc46cb475

- simplified IColladaMeshWriterProperties interface
- ColladaMeshWriter can now write complete scenes as well as just writing single meshes.


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IGUIEditBox: Added setDrawBackground. Crash-fix with wordwrapping and spaces. Remove bug with spaces getting added to the end of each line. Add missing serialization for Border.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3857 dfc29bdd-3216-0410-991c-e03cc46cb475

CGUISkin::draw3DSunkenPane no longer ignores fillBackGround in non-flat mode. Also borderlines are no longer drawn overlapping to avoid ugly corners.


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- don't try to return relative filename to other partition on Windows (c:, d:)
- handle path with different upper/lowercase on Windows.

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- ColladaMshWriter does now write texture-data as well.

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Merged revisions 3729-3829 from 1.7 branch. Fixed serialization of camera nodes, fix array::erase, fix mem leaks in example 22, fix interpolation in SColorf, fix crash in collada loader.

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Relax screenshot test for loaded scene. Due to the animator start the scene looks different each time.

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Added tests to check whether the driver supports the necessary features, and stop early if it does not make sense.
Fixed line endings for testXML.cpp

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- blinn attributes have to ordered on writing 
- there is no flow="OUT" in accessor - param so I removed it (maybe that was from an older collada version?)
- material-name is without #
- input attribute is called offset not idx 
Also a little cleanup to avoid redundant code.


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