[Freeciv-Dev] build error under mac os x (PR#894)

[mxcantor@xxxxxxxxxxxxx]

Full_Name: Max Cantor
Version: 1.11.4-1.12
Distribution: Built from source
Client: Both (or N/A)
OS: Mac OS X (Darwin-ppc)
Submission from: (NULL) (165.247.91.195)


The gcc supplied with apple-darwin-ppc does not support variadic macro
arguments.  Therefore, the cpp always croaks when it gets to freelog macro in
the log.c or log.h file.  Basically, it has to be set to use the functional,
slower, non-macro form of freelog provided for non-gcc compilers.  I'm not sure
how to set this automatically, so I'm just reporting it.