various smaller updates for CudaSimulator
obvious fix for CacheBlockingSimulator
added auto-tuning demo
added parameters for CudaSimulator
working on documentation
can now replace parameters in SimulationParameters and pretty print those
const-correctness and cosmetics for the optimizers (and friends)
minor reformating
adding vectorization example

--HG--
rename : src/examples/jacobi3dupdateline/CMakeLists.txt => src/examples/jacobi3dvectorized/CMakeLists.txt
installed shared object is now versioned
models which support updateLineX() are no longer forced to have a update() function, too -- reduces code duplication
added convenience function for string conversion
cleared up ambiguous function overload
dropped fixme remark as non-template code in said file is next to nonexistent
moved output operator into LGD namespace
pruned now superfluous code
proof-of-concept consumer code for auto tuner
reworked loop peeling
updated LibFlatArray