using a different wiring file, and a bundle of existing certs.

Change to use the realpath function in the 'Cwd' module instead of
calling realpath via the shell.  The shell command varies in its
reaction to a missing final path component.  On some platforms (Linux,
FBSD10+) realpath reports an error if the final component doesn't exist
on the filesystem.  On others (FBSD < 10), it does not report an error.

The perl function from 'Cwd' emulates the same behavior as FBSD prior to
version 10, which is the behavior the scripts expect.

From here on out, instead of using `realpath`, do the following:

use Cwd qw(realpath);
..
..
my $realpath = realpath($somepath);

Previously, all certificates were created without URNs, and ProtoGENI
sites bolted them on when initsite was run.

warning.

ops apache certificate.

This commit is intended to makes the license status of Emulab and
ProtoGENI source files more clear.  It replaces license symbols like
"EMULAB-COPYRIGHT" and "GENIPUBLIC-COPYRIGHT" with {{{ }}}-delimited
blocks that contain actual license statements.

This change was driven by the fact that today, most people acquire and
track Emulab and ProtoGENI sources via git.

Before the Emulab source code was kept in git, the Flux Research Group
at the University of Utah would roll distributions by making tar
files.  As part of that process, the Flux Group would replace the
license symbols in the source files with actual license statements.

When the Flux Group moved to git, people outside of the group started
to see the source files with the "unexpanded" symbols.  This meant
that people acquired source files without actual license statements in
them.  All the relevant files had Utah *copyright* statements in them,
but without the expanded *license* statements, the licensing status of
the source files was unclear.

This commit is intended to clear up that confusion.

Most Utah-copyrighted files in the Emulab source tree are distributed
under the terms of the Affero GNU General Public License, version 3
(AGPLv3).

Most Utah-copyrighted files related to ProtoGENI are distributed under
the terms of the GENI Public License, which is a BSD-like open-source
license.

Some Utah-copyrighted files in the Emulab source tree are distributed
under the terms of the GNU Lesser General Public License, version 2.1
(LGPL).

* Split up boss/ops/fs install into indvidual modules; generally, what
  was a toplevel phase in the original files is not a file. This
  allowed for better code/variable reuse. No longer monolithic, which
  makes it easy to test and rerun parts.

* Incorporate "update" into the install process. Certain phase file
  can be used in update mode, as when the IP/subnet/domain changes.

* Moved the MFS setup from rc.mkelab into the normal install process.
  Users no longer have to do this themselves. Good thing.

* installvars.pm is a new library that has the merged set of the
  zillion variables that were at the top of boss/fs/ops install.

not put in any of the req_altname stuff.

Takes old certificate, gets the private key from inside it,
generates a new serial number, and uses x509 to create a new
certificate. Good for updating expired certs.

This reverts commit 0786a006.

This is because if sites bother to obtain externally signed certificates
for their web server, they're going to use @WWWHOST@ for the name.

communication with the clearinghouse, and modifications to the
certificate format (put the URN in subjectAltName and move any
URL to a private OID under subjectInfoAccess).

are now generated for new certificates.  However, UUIDs and old HRNs
are still used, for compatibility.

its really a hugely stripped down Emulab boss install, using a very
short version of install/boss-install to get a few things into place.

I refactored a few things in both the protogeni code and the Emulab
code, and whacked a bunch of makefiles and configure stuff. The result
is that we only need to install about 10-12 files from the Emulab
code, plus the protogeni code. Quite manageable, if you don't mind
that it requires FreeBSD 6.X ... Still, I think it satisfies the
requirement that we have a packaged clearinghouse that can be run
standalone from a running Emulab site.