Darwin stuff is getting deprecated

With the latest Apple developers' tools, I get some warnings that
weren't there before:

dynloader.c: In function 'pg_dlsym':
dynloader.c:44: warning: 'NSIsSymbolNameDefined' is deprecated (declared at /usr/include/mach-o/dyld.h:150)
dynloader.c:46: warning: 'NSLookupAndBindSymbol' is deprecated (declared at /usr/include/mach-o/dyld.h:158)
postmaster.c: In function 'PostmasterMain':
postmaster.c:779: warning: 'DNSServiceRegistrationCreate' is deprecated (declared at
/usr/include/DNSServiceDiscovery/DNSServiceDiscovery.h:114)

Anyone want to look into this and see what we're supposed to do instead?

The postmaster.c message is in the USE_BONJOUR code.  There was already
some discussion about how we were using an obsolete Bonjour API and we
ought to rewrite to support using Bonjour on non-Darwin platforms.
Perhaps Apple is now using a compatible API?
        regards, tom lane