Add patch to fix argparsing in x-terminal-emulator mode
The bug #901245 was never closed, but although once fixed upstream has reappeared with 2.1.2.
Message: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901245#17
There is a fix in the upstream code, but a new upstream release has not yet been made. This patch applies the single commit needed to keep terminator from violating Debian Policy 11.8.3.