[bf1942] New build: fixed COOP.

[tdsch at decantur.net]

Hi,

With the latest patch, I get:

./bf1942_lnxded: relocation error: ./bf1942_lnxded: symbol calloc, version
GLIBC_2.0 not defined in file libm.so.6 with link time reference

debian unstable
libc6 2.3.1