Update to 2.13. Replace two patches with SUBST statements to make updates
easier.

LGOGDownloader 2.13
- Fixed some characters in extra filenames by url decoding the links
- Patches now use duplicate handler
- Added support for DLCs
- Fixed segfault when downloading non-dlc patches (patch by: Geoffrey Biggs)
- Fixed a login issue
- Downloader::getResponse now prints more verbose error messages
- Use secure.gog.com to get "buk" value for login form
- Check orphans regex matches the file path instead of filename
- Fixed using local xml for hashes in Downloader::downloadFile
- Use remote XML for languagepacks (patch by: Ismo Toijala)
- Only hash file if remote XML is available (patch by: Ismo Toijala)
- Added retry support to Downloader::getResponse
- Subdirectories for DLCs are created based on the DLC gamename
* gamename/dlc/dlc_gamename
- Added --wait option to set delay for http requests
- Removed language id/code from urls because GOG no longer requires it

(wiz)