[win32] update and clean exclude.txt used in BuildSetup
[win32] installer: remove language checkbox and just install all languages
[win32] installer: remove unused code
[win32] installer: move addon copy
[win32] installer: remove outdated code
[win32] remove unused build  .bat files
[pydocs] don't add core code comments to pydocs
Merge pull request #3172 from MartijnKaijser/win32_installer_cleanup

[win32] update and clean windows installer
Merge branch 'master' of https://github.com/xbmc/xbmc