LTI-Lib (C++ Computer Vision Library) Code

doerfler: @CHG: In an effort to support MINGW in the eclipse SDK Lars Libuda and I fixed quite a few macros. Changes include:
- _LTI_MSC_VER => _LTI_WIN32 for OS specific code, likewise for gcc vs. linux
- __linux__ => _LTI_LINUX obviously
- Lars hacked processInfo ASM to compile under gcc using Windows asm (working?)
- ltiMath.h now pulls isnan(), isinf(), and isfinite() in from namespace std for gcc>3 Some systems use other specs than linux where this is not needed.

Instructions for compiling the LTI-Lib with mingw will follow.

restructuring the linear algebra stuff in ltilib-2:
- only real linear algebra functors derive from linearAlgebraFunctor
- parameters::useLapack now in linearAlgebraFunctor
- lots of cleaning up, but not yet finished

changed project name

libuda: Fixed a warning generated by .NET compiler

zieren: @FIX getKeys(section) now works correctly

haehnel: performance improvement - Part II

doerfler: erroneously commited pointList using smallObjectList during the last change -> reverting to std::list

haehnel: @FIX: lti::MergergIToImage has now an improved handling for overflows/underflows. Overflows/underflows are now explicitly cut off in the corresponding range of channel8/channel.

finalized, should now work with all four invariant types

added include of ltiUndebug.h