The clang compiler provided with macosx emits warnings like:
CC bufferevent.lo
clang: warning: argument unused during compilation: '-I .'
clang: warning: argument unused during compilation: '-I ./compat'
clang: warning: argument unused during compilation: '-I ./include'
clang: warning: argument unused during compilation: '-I ./include'
for each file being compiled. This generates a lot of noise during
compilation making it hard to see "real" errors. This patch mute
those warnings.
We had cmake and autoconf tests for the inet_aton function... but we
never actually use it any more.
(The autoconf tests still use the callability of inet_aton to decide
whether we need to link against -lresolv)
Reported by Harlan Stenn.
