adjusted the configure to always skip the fine-poll() test on Mac OS X (darwin)

CHANGES

@@ -7,6 +7,12 @@
                                   Changelog
 
 
+Daniel (13 May 2005)
+- Grigory Entin reported that curl's configure detects a fine poll() for Mac
+  OS X 10.4 (while 10.3 or later detected a "bad" one), but the executable
+  doesn't work as good as if built without poll(). I've adjusted the configure
+  to always skip the fine-poll() test on Mac OS X (darwin).
+
 Daniel (12 May 2005)
 - When doing a second request (after a disconnect) using the same easy handle,
   over a proxy that uses NTLM authentication, libcurl failed to use NTLM again

configure.ac

@@ -1495,6 +1495,19 @@ AC_CHECK_DECL(basename, ,
 #endif
 )
 
+AC_MSG_CHECKING([if we are Mac OS X (to disable poll)])
+disable_poll=no
+case $host in
+  *-*-darwin*)
+    disable_poll="yes";
+    ;;
+  *)
+    ;;
+esac
+AC_MSG_RESULT($disable_poll)
+
+if test "$disable_poll" = "no"; then
+
   dnl poll() might be badly emulated, as in Mac OS X 10.3 (and other BSDs?) and
   dnl to find out we make an extra check here!
   if test "$ac_cv_func_poll" = "yes"; then
@@ -1516,8 +1529,8 @@ if test "$ac_cv_func_poll" = "yes"; then
     AC_MSG_RESULT(cross-compiling assumes yes)
     AC_DEFINE(HAVE_POLL_FINE, 1, [If you have a fine poll])
     ) dnl end of AC_RUN_IFELSE
-fi
-
+  fi dnl poll() was found
+fi dnl poll()-check is not disabled
 
 
 AC_PATH_PROG( PERL, perl, ,