They do not appear to have 20 in their repos anymore, and no traces can
be found of it in the history, as usual. They do have 11, 17, and 21.
Last time we chose one randomly and hoped it doesn't keep changing
value. This dismally failed: 20 was upgraded to 21. It looks like 17 may
have some staying power.
They do not appear to have 15 in their repos anymore, and no traces can
be found of it in the history, as usual. They do have 11, 17, and 20, so
choose one randomly and hope it doesn't keep changing value.
D lang compilers have an option -release (or similar) which turns off
asserts, contracts, and other runtime type checking. This patch wires
that up to the b_ndebug flag.
Fixes#7082