Succesfully compiled yWrite Simulink module on Windows and Ubuntu

In this commit considerable changes have been done to the yWrite
CMakeLists.txt file to account for cross-platform compatibility (UNIX
and WIN32). Tests have been carried out in the following setup:

Machine 1:
Windows 7 Enterprise, 64 bit Operating System
Microsoft Visual Studio 2010 Professional (cl compiler)
Matlab 7.12.0 (R2011a)
CMake 2.8.10.2
YARP 2.3.22

Machine 2:
Ubuntu 12.04 LTS, 32-bits Operating System
Compiler used: gcc
CMake 2.8.9
YARP 2.3.60

Also in this commit the other modules from the Simulink library are not
being compiled until their corresponding CMakeLists are changed to the
version used in this module.
Additional cleaning and minor fixes to yWrite's generic CMakeLists.txt
CMakeLists updated to have minJerkGenerator running on Windows and Ubuntu
FindMatlab added to minJerkGenerator's cmake folder to properly find Matlab
mexw64 added to Simulink models and minJerk.cpp has been modified

For some reason under Windows MDL_SIM_STATE Matlab macros can't be left
empy (contrary to UNIX). Therefore, those macros have been commented
out. Besides, the softRealTime's mex function has been compiled and
added for WINx64
wbInterface Simulink module has been update with the latest CMakeLists to run on Windows and unused GetState macros have been commented
FindMatlab.cmake has been added the cmake folder of wbInterface to properly find Matlab on various platforms
README with some hints

Hints to properly start using the Simulink library
add 2 files for touching table control
Accounting for recent changed in wbi
Merge branch 'master' into wholeBodyDynamicsTree