add multicast structures from RFC 3678 to netinet/in.h
authorTimo Teräs <timo.teras@iki.fi>
Wed, 31 Jul 2013 09:05:14 +0000 (12:05 +0300)
committerRich Felker <dalias@aerifal.cx>
Sat, 23 Nov 2013 21:56:43 +0000 (16:56 -0500)
and use _GNU_SOURCE || _BSD_SOURCE guards for all of the RFC 3678
namespace polluting things like glibc/uclibc does.


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