configure.ac: fix linking CFNetwork with SDKs older than 10.8

configure.ac

@@ -155,7 +155,7 @@ case "${host_os}" in
     LDFLAGS="${LDFLAGS} -Wl,-headerpad_max_install_names ${ARCH_flag}"
     VLC_ADD_LIBS([libvlc vlc],[-Wl,-undefined,dynamic_lookup,-framework,AppKit])
     VLC_ADD_LIBS([avcodec access_avio swscale postproc i420_rgb_mmx x262 x264 x26410b],[-Wl,-read_only_relocs,suppress])
-    VLC_ADD_LIBS([libvlccore],[-Wl,-framework,CoreFoundation,-framework,CFNetwork])
+    VLC_ADD_LIBS([libvlccore],[-Wl,-framework,CoreFoundation,-framework,CoreServices])
 
     dnl Allow binaries created on Lion to run on earlier releases
     AC_EGREP_CPP(yes,

src/darwin/netconf.c

@@ -29,7 +29,7 @@
 #include <vlc_network.h>
 
 #include <CoreFoundation/CoreFoundation.h>
-#include <CFNetwork/CFProxySupport.h>
+#include <CoreServices/CoreServices.h>
 
 /**
  * Determines the network proxy server to use (if any).