"debug" capability to network protocol
FREECIV_DEBUG builds should add optional "debug" capability to their network capabilities, so that the other end knows of extra functionality available.
This does not enable the use-case I was thinking about.
This would still be nice-to-have for possible future use, but for that we want it in main branch only.
FREECIV_DEBUG builds should add optional "debug" capability to their network capabilities, so that the other end knows of extra functionality available.