Force poll() emulation for Darwin to always be on. It's too broken to consider being used. This resolves the console issue OSX users have been seeing. I would have liked to autoconf this but I haven't been able to come up with a test case that works. Que sera.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@46780 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/Makefile

@@ -37,9 +37,14 @@ OBJS+=stdtime/localtime.o
 # by a module.
 OBJS+=say.o
 
-ifeq ($(wildcard /usr/include/sys/poll.h),)
+ifneq ($(findstring darwin,$(OSARCH)),)
   OBJS+=poll.o
   ASTCFLAGS+=-DPOLLCOMPAT
+else
+  ifeq ($(wildcard /usr/include/sys/poll.h),)
+    OBJS+=poll.o
+    ASTCFLAGS+=-DPOLLCOMPAT
+  endif
 endif
 
 ifeq ($(wildcard /usr/include/dlfcn.h),)