Patches for NetBSD-4

[Edgar Fuß <ef%math.uni-bonn.de@localhost>]

Yes, I know that NetBSD 4 is unsupported.

Nevertheless, I have a bunch of pkgsrc patches to make certain packages 
build/run on 4.0.1.

Is there any sensible way of sharing them? They may be not only of interest 
to other people running ancient versions of NetBSD; some of them could (in 
some generalized way) be useful for other platforms, too.

For example, yesterday, I fixed www/squid3 which didn't detect sockaddr_un 
because of a missing #include <sys/types.h> in the configure test.