contrib: live555: update to 2022.07.14

Lots of patches have been either fully or partially implemented, and have thus been dropped or reworked.

For macOS, the "macosx" config file is no more; only "macosx-bigsur", "macosx-catalina", and "macosx-no-openssl". "macosx-bigsur" has been chosen as the config, and all the sed commands have been fixed to account for multiple macosx* files.

The library now uses ifaddrs.h unless NO_GETIFADDRS is defined. For Windows, ifaddrs.h doesn't exist and thus is always needed. For Android, it is available since API level 24.

The library also uses OpenSSL unless NO_OPENSSL is defined. This is added to LIVE_EXTRA_CFLAGS, and the pkg-config file.

contrib/src/live555/DISABLE_LOOPBACK_IP_ADDRESS_CHECK.patch

---- live.orig/groupsock/GroupsockHelper.cpp	2016-11-28 22:42:18.000000000 +0100
-+++ live/groupsock/GroupsockHelper.cpp	2021-02-09 10:27:15.669908139 +0100
-@@ -616,7 +616,7 @@
-     // that other nodes will think our address is the same as we do.)
-     do {
-       loopbackWorks = 0; // until we learn otherwise
--
-+#ifndef DISABLE_LOOPBACK_IP_ADDRESS_CHECK
-       testAddr.s_addr = our_inet_addr("228.67.43.91"); // arbitrary
-       Port testPort(15947); // ditto
- 
-@@ -653,6 +653,7 @@
- 
-       // We use this packet's source address, if it's good:
-       loopbackWorks = !badAddressForUs(fromAddr.sin_addr.s_addr);
-+#endif
-     } while (0);
- 
-     if (sock >= 0) {