[MacPorts] #27250: Add OpenSSH GSSAPI key exchange patch

[MacPorts]

#27250: Add OpenSSH GSSAPI key exchange patch
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 Reporter:  lassi.tuura@…        |       Owner:  macports-tickets@…                   
     Type:  enhancement          |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  1.9.2                                
 Keywords:                       |        Port:  openssh                              
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 Would it be possible to build openssh with patches from
 http://www.sxw.org.uk/computing/patches/ or at least provide a variant
 which includes the patch?

 In particular it adds support for GSSAPITrustDNS option, which OS X system
 SSH appears to be built with and which is very useful for working in
 Kerberos V5 environment. Or more accurately put ssh without that option
 isn't really very useful in Kerberos V5 environment where DNS aliased host
 names are common, e.g. for load balanced ones.

 From http://paste.lisp.org/display/64135 it looks like the predecessor
 patch might have been included before, but I can't find any corresponding
 section in revision log of openssh port file.

 I took the patch for 5.3p1 from
 http://www.sxw.org.uk/computing/patches/openssh-5.3p1-gsskex-
 all-20100124.patch, adapted it to OpenSSH 5.6p1 code (Makefile.in, key.h
 and key.c need trivial patch updates), and attached it to this ticket.

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Ticket URL: <https://trac.macports.org/ticket/27250>
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