no more libproxy for mac; refs #10

configure.in

@@ -58,8 +58,8 @@ fi
 if test "$found" == "no"; then
   case $host in
     *darwin*)
-       PROXYLIB="-lproxy"
-       ;;
+      PROXYLIB=""
+      ;;
     *mingw*|*win*)
       PROXYLIB="-lwinhttp"
       ;;