Fixes to binary installer:
* generateWindowsProxyCode() and generateUnixyProxyCode() now generate valid proxy code on ANY platform
* do not create extra unixy proxy code on windows if it's not needed (cygwin not found)
* now on windows exe installation works like: program.exe => program.bat, program.exe.bat
* windows proxy code now do not use "call" command to execute exe files, it solves problem with wrong arguments processing with "%" and "^" chars