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Merged from 1.8 branch, revisions 4393-4484: Compiler issues with certain compilers fixed, localtime bug under windows7 fixed.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4485 dfc29bdd-3216-0410-991c-e03cc46cb475

- revert rotation patch from rev4478. Texture Matrix will be default solution for manipulate 2d image drawing.

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- Added support for rotation 2D images. This patch base on FuzzYspo0N patch from irrEXT. (Software drivers aren't supported).

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New method for camera scene nodes. updateMatrices updates the camera matrices without uploading them to the driver directly. Patch submitted by hendu

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Added window position parameter to device creation params. For now, window is not programmatically movable. This patch is merely intended for restoring the device in the same location as with last run. Patch provided by Auria

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4472 dfc29bdd-3216-0410-991c-e03cc46cb475

Added hendu's constification patch for memory read/write files. Also slightly changed the use of global C methods to class specific static methods, which seems more appropriate

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Also fixed texture names, which could have spaces and thus fail immediately upon loading. Now the path is given relative to the .mtl file, which often works, and in case of spaces in the path no path at all is used.

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IGUIEnvironment::hasFocus has now a parameter checkSubElements as subelements are usually seen as part of an element. Default unfortunately must be false due to backward compatibility.

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- Added query feature related to DXT compressed textures.
- Added compressed textures support for D3D9.
- Fixed minor bugs in OpenGL related to compressed textures handling.
- Properly handle compressed textures in D3D8 and Software drivers (Those drivers doesn't support compressed textures).

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- Extended IImage class for support compressed textures.
- Improved DDS loader for support mip map loading.
- Added DXT1-5 compressed textures support for OpenGL.

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- Added partially (IImageCompressed part) support for compressed textures. Currently only DDS format is supported.

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