games/trx: Update to 1.11.1

Install the engine data tree under DATADIR and point the wrapper at it
with TRX_DIR, added upstream in this release. Previously the port
installed only the binary and the user had to populate scripts/ and
modules/ by hand.

ChangeLog: https://github.com/LostArtefacts/TRX/releases/tag/trx-1.11.1

		https://github.com/LostArtefacts/TRX/releases/tag/trx-1.11