[MacPorts] #29719: devel/gnutls: Update to version 2.12.6.1

[MacPorts]

#29719: devel/gnutls: Update to version 2.12.6.1
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 Reporter:  sqs@…                |       Owner:  macports-tickets@…                   
     Type:  update               |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  1.9.2                                
 Keywords:                       |        Port:  gnutls                               
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 This patch updates the devel/gnutls Portfile to GnuTLS 2.12.6.1, released
 on 4 Jun 2011. The previous version was GnuTLS 2.8.6, released on 15 Mar
 2010, which was quite old.

 Also, this patch adds the configure option --with-libgcrypt. This is
 because GnuTLS 2.10.3 switched default crypto libraries from libgcrypt to
 libnettle. Libnettle is faster, but libgcrypt is what this port has always
 used, so this patch doesn't change that.

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Ticket URL: <https://trac.macports.org/ticket/29719>
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