Bug#975379: 0ad: hits RAM limitations of armhf, FTBFS on arm64

[Hans-Christoph Steiner]

Package: 0ad
Version: 0.0.23.1-2
Severity: important

The official Raspberry Pi OS is moving to 64-bit (arm64), and 64-bit
Raspberry Pi boards are widely available.  0ad runs pretty well in
Raspbian 32-bit on a Raspberry Pi 4 with 4GB of RAM.  But it seems to
run out of RAM on big multiplayer games.  That makes it crash.
Running it in 64-bit mode would let it use the 4GB or 8GB of RAM
available on the model 4.

Right now, arm64 is listed as an arch in debian/control, but it is FTBFS:
https://buildd.debian.org/status/fetch.php?pkg=0ad&arch=arm64&ver=0.0.23.1-5&stamp=1597749076&raw=0