Really big mess for the pc3000s nowadays.

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).

page, and include the scripts I used to make it (along with instructions).

since setting it before no longer works.

Removed obsolete web pages.

Set the charset for all emulab pages to utf-8 which is needed to
display foreign names correctly.  Also added three rows to table_regex:
tinytext_utf8, text_utf8, fulltext_utf8

Enhanced form_defs.php:

  - Add Support for Textarea

  - Add Support for a vertical list, for example see Category in
    submitpub.php

  - Add support for dumping the form values in plain text, used in the
    email I send to testbed-ops.

  - Change Error Reporting text for subfields such as in a list so
    they also include the text from the outer field, for example in
    newosid "ping" will become "OS Features, ping".  I needed this
    since some of my subfields didn't have labels and it seamed like
    the right thing to do.

  - Set #return_value to 1 in FormRenderCheckBox if it not already
    specified

  - In FormRenderSelect, if the #value is not in the list add it to
    the end.

  - Add support for "display" type, to just display some text in the
    table

  - Possibly some other little things I forgot about.

New site variable PUBSUPPORT.

Implement FS#201: Provide users a way to add a paper that used Emulab
see (https://users.emulab.net/flyspray/?do=details&id=201), summary of
changes:

  - Controlled via the new site variable PUBSUPPORT.

  - The emulab_papers spread sheet is now frozen all new changes
    should be made using the new system.

  - New pages submitpub.php for users to submit a new publication
    with different views for admins and non-admins.

  - New page expubs.php to replace doc/expubs.html, lists publications
    in database.  Also allows admins to edit publications.

  - Project members can edit papers associated with the project as
    long as they have local_root or higher privileges. Papers for a
    project are listed under a new tab in the showproject page. I keep
    track of the last person to edit the paper submission in addition
    to who initially submitted it.

  - Users can modify papers they submitted which is needed if the
    project was N/A. Papers users submitted now appear in a new tab in
    the showuser page.

  - Script to import spreadsheet to the database is in
    utah/bibliography/emulab_pubs-import.pl.

  - Changes web pages that point to doc/expubs.html to instead point
    to expubs.php

Return a 404 if the file is not found, rather than returning an empty
page and logging the error in the php error log file.  The error is no
longer logged in the error log, to find this error look for the 404
status code in the access log.

Return a 400 if the document name is invalid.

Allow "." is base name in tutorial/docwrapper.php3.

specific hardware page or else generate error. This prevents all
Emulabs from having our hardware listing.

Chopped out explanation text about slothd and the XP boot process into the knowledge base.  Add refs to them here.

  register_globals=1 to turn POST/GET/COOKIES arguments in local variables.
  This is known to be a terrible security risk, and we keep saying we are
  going to fix it, and now I am. In order to accomplish this on a
  transitional basis (since I don't want the entire web interface to stop
  working while I debug it), and because the code just needs the cleanup, I
  am doing it like this: Each page will sport new declarations at the top:

	RequiredPageArguments("experiment", PAGEARG_EXPERIMENT,
                              "template",   PAGEARG_TEMPLATE,
                              "instance",   PAGEARG_INSTANCE,
                              "metadata",   PAGEARG_METADATA,
                              "osinfo",     PAGEARG_OSINFO,
                              "image",      PAGEARG_IMAGE,
                              "project",    PAGEARG_PROJECT,
                              "group",      PAGEARG_GROUP,
                              "user",       PAGEARG_USER,
			      "node",       PAGEARG_NODE,
			      "yesno",      PAGEARG_BOOLEAN,
			      "message",    PAGEARG_STRING,
			      "age",        PAGEARG_INTEGER,
                              "cost",       PAGEARG_NUMERIC,
                              "formfields", PAGEARG_ARRAY,
                              "unknown",    PAGEARG_ANYTHING);

	OptionalPageArguments("canceled", PAGEARG_BOOLEAN);

  The first token in each pair is the name of the global variable to
  set, and the second token is the type. So, for "experiment" we look at
  the URL for a pid/eid or exptidx, etc, sanity check them (safe for a
  DB query), and then try to find that experiment in the DB. If it maps
  to an experiment, set global variable $experiment to the object. Since
  its a required argument, produce an error if not supplied. Similar
  treatment for optional arguments, with the obvious difference.

  The goal is to have ALL argument processing in one place, consistent,
  and correct. I've found numerous places where we leak unchecked
  arguments into queries. It also cuts out a lot of duplicated code.

* To make the above easier to deal with, I've been replacing lots of
  hardcoded URLS in the code of the form:

	foo.php3?pid=$pid&eid=$eid ...

  with

        CreateURL("foo", $experiment)

  which creates and returns the neccessary url string, by looking at
  the type of its arguments (experiment, template, instance, etc.)

  Eventually plan to replace them all so that URL handling throughout
  the code is all defined in one place (all the new URL code is in
  url_defs.php).

* I have cranked up error reporting to tell me anytime a variable is
  used before it is initialized, plus a bunch of other stuff that PHP
  deems improper. Think of it like -Wall ... and boy we get a lot of
  warnings.  A very large percentage of the diffs are to fix all these
  warnings.

  The warnings are currently going to /usr/testbed/log/php-errors.log,
  and I'll be adding a script to capture them each night and mail them
  to tbops. This file also gets errors (this will be a change for
  developers; rather then seeing errors and warnings dumped in the
  middle of web pages, they will go to this file instead).

* Major refactoring of the code. More objects (nodes, images, osids).
  Moving tons of queries into the objects in the hopes of someday
  getting to a point where we can split the web interface onto a
  different server.  Lots of general cleanup.