Update live555 version check (close #5879)

configure.ac

@@ -1658,10 +1658,10 @@ AS_IF([test "${enable_live555}" != "no" -a -n "${CXX}"], [
   ])
   CPPFLAGS="${CPPFLAGS} ${CPPFLAGS_live555}"
 
-  AC_CACHE_CHECK([for live555 version 1275091200 or later], [ac_cv_live555], [
+  AC_CACHE_CHECK([for live555 version 1324598400 or later], [ac_cv_live555], [
     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([
 [#include <liveMedia_version.hh>
-#if !defined (LIVEMEDIA_LIBRARY_VERSION_INT) || (LIVEMEDIA_LIBRARY_VERSION_INT < 1275091200)
+#if !defined (LIVEMEDIA_LIBRARY_VERSION_INT) || (LIVEMEDIA_LIBRARY_VERSION_INT < 1324598400)
 # error BOOM
 #endif]])
     ], [
@@ -1677,34 +1677,7 @@ You can get an updated one from http://www.live555.com/liveMedia .])
     AS_IF([test -n "${enable_live555}"], [
       AC_MSG_ERROR([Update live555 or pass --disable-live555 to disable RTSP input support.])
     ])
-    ac_cv_live555_usable=""
   ], [
-    dnl Check that live555 is patched correctly.
-    AC_CACHE_CHECK([for live555 usability], [ac_cv_live555_usable], [
-      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
-[#include <locale.h>
-#ifdef __APPLE__
-# include <xlocale.h>
-#endif
-#undef LC_ALL
-#define LC_ALL BOOM
-#ifdef LC_ALL_MASK
-#include <Locale.hh>
-#endif
-#include <GroupsockHelper.hh>]], [
-[struct in_addr addr;
-our_inet_ntoa(addr, NULL);]])
-      ], [
-        ac_cv_live555_usable="yes"
-      ], [
-        ac_cv_live555_usable="no"
-      ])
-    ])
-    AS_IF([test "$ac_cv_live555_usable" = "no"], [
-      AC_MSG_ERROR([liveMedia lacks patches and is not usable.
-Please apply our patches from the VLC contrib (contrib/src/live555/).
-You can also disable RTSP input with --disable-live555. You were warned.])
-    ])
     other_libs="-lgroupsock -lBasicUsageEnvironment -lUsageEnvironment"
     other_libs_pic="-lgroupsock_pic -lBasicUsageEnvironment_pic -lUsageEnvironment_pic"
     AS_IF([test "${SYS}" = "mingw32"], [