openssh: GSSAPI key exchange patch

This brings Simon Wilkinson's GSSAPI key exchange patch [1] to 6.2p2,
which is also included in Apple's OpenSSH along with Kerberos.  It adds
GSSAPIKeyExchange, GSSAPIClientIdentity, GSSAPIServerIdentity,
GSSAPITrustDns, GSSAPIRenewalForcesRekey, GSSAPITrustDns keywords to ssh
config.

[1]: http://www.sxw.org.uk/computing/patches/openssh.html

Closes: #225.

Signed-off-by: Xiyue Deng <manphiz@gmail.com>
openssh: add option to enable GSSAPI key exchange patch.

* Other stylenit.
less: add option to use pcre (instead of posix) for regex

Closes #226.

Signed-off-by: Xiyue Deng <manphiz@gmail.com>
cvs: 1.12.13

The reason to go through the effort of including this in the dupe
directory? Xcode 5 Developer Preview no longer has "cvs" included.

This is pretty much a verbatim copy of what you'd get from Xcode 4,
using the same patches and configure arguments from
http://www.opensource.apple.com/

I discovered ENV.j1 due to weird, strange installation failures if
I didn't have it. So, since this is an ANCIENT piece of code, I'm
just going to let that be, and never try to figure out why it doesn't
parallelize properly.

Closes #201.

Signed-off-by: Xiyue Deng <manphiz@gmail.com>
cvs: more refinement.

* Drop config.h patch. Build fine out-of-the-box.
* Fix test.
rsync 3.1.0

Closes #232.

Signed-off-by: Xiyue Deng <manphiz@gmail.com>
make 4.0

Closes #236.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>