libass Windows binaries for XBMC

Tools required:
* Visual Studio 2013

To reproduce:

1. git clone git://github.com/xbmc/libass.git
2. Call win32\deps\DownloadLibass.bat to download source code of libass from https://github.com/libass/libass
3. Call win32\deps\DownloadBuildDeps.bat to download following dependecies: fontconfig, freetype, harfbuzz, libfribidi, libiconv
4. Grab libenca dependecies from an XBMC build (See http://wiki.xbmc.org/index.php?title=HOW-TO:Compile_XBMC_for_Windows_using_Git):
     copy XBMC file project\VS2010Express\libs\libenca\Release\libenca.lib into win32\deps\lib
     copy XBMC file lib\enca\lib\enca.h into win32\deps\include
5. Apply patches in the folder patches
6. Open .sln file in folder win32\VS2013 and compile as Debug and Release
7. Run win32\package\package.bat to produce the final archive
