This commit introduces an alternate implementation of the zlib
decompressor based on Pako (https://github.com/nodeca/pako).

Previously, in launch.sh, `$HERE` was the directory of `$0`.
However, if `$0` was actually a symlink, `$HERE` would be
wherever the symlink was, which could cause issues (for
example, the script wouldn't be able to local `$WEB` or
`$WEBSOCKIFY` properly).

Now, `$HERE` looks at whatever `$0` points at instead.

Closes #447.

Issue #449 pointed out that there were some files that were
missed in 6f514864.  This
fixes that.

Closes #449
Closes #450

When `utils/launch.sh` clones websockify, it can be cloned
into the incorrect directory, depending on how `utils/launch.sh`
is run.  This commit ensures that websockify is always cloned into
`utils/websockify`.

Somehow, `utils/websockify` itself manage to sneak back in to
6f514864.  This actually removes
it.

This commit removes local copies of websockify.
Instead `utils/launch.sh` performs the following logic:

If `utils/websockify` exists, use `utils/websockify/run` (if the latter
does not exist, or is not executable, fail, since this is probably a
mistake).

Otherwise, check to see if websockify is installed somewhere (try
`which websockify`).  If it is, use that.  Otherwise, clone
websockify from github, and tell git to ignore that directory.

Packaged versions of noVNC should simply list websockify as a
requirement.  The debian packaging has been updated to reflect
this.

Closes #433

Pull 90b519edf0c1857d

Add a node.js-based tool (utils/parse.js) to read keysymdef.h and produce a JavaScript file
mapping Unicode code points to keysyms.

Also add the generated table (include/keysymdef.js).

Pull in websockify 4725aa7.

- Update to c0855c6cae of web-socket-js

- Update both the submodule and the swf build. The submodule now
  contains the unobfuscated source for swfobject.js which should make
  websockify more DFSG compliant.

- Remove Hixie support. iOS 6 now includes HyBi support which means
  there is no remaining platform that needs Hixie.

Also, update nova-novncproxy to import websockify instead of wsproxy.

Upstram OpenStack Nova package has moved the config engine into a
separate package. Mirror that change in the novnc script.

currently CONF was attempted of being imported from nova config.py
rather than openstack/common/cfg.py. this commit fixes that.

Pull c33f0b52e7 from websockify.

- Fix for python2.4 with URL parsing.
- Set binaryType earlier in Opera 12.10 to avoid receiving a blob.
- Re-order client and target processing so that pending client data
  has an opportunity to be sent when the target closes.

Nova recently removed parse_args from flags.py. This updates the
nova proxy to properly use CONF instead of FLAGS.

Pull in websockify 1669139

The MPL 2.0 license is a "file-level" copyleft license vs the
"project-level" nature of the L/GPL. The intention of noVNC has
always been that it should be easy to incorporate into existing
projects and sites whether free/open or proprietary/commercial. The MPL
2.0 is designed for this sort of combination project but still
requires that any distributed modifications to noVNC source files must
also be published under the same license.

In addition, the MPL 2.0 allows the code to be used in L/GPL projects
(the secondary license clause). This means that any projects that are
already incorporating noVNC should not be impacted by this change and
in fact it should clarify the licensing situation (the exact
application of the L/GPL to web applications and interpreted code is
somewhat ambiguous).

The HTML, CSS, image and font files continue to be under more
permissive licenses (see LICENSE.txt). The included websockify python
code remains under a LGPLv3 license although the include/websock.js
file from the websockify component is now under MPL 2.0 as well.

Permission was received from other noVNC authors to make this change to their
code license on the following dates:

    - Chris Gordon (UI): Jun 24, 2012
    - Antoine Mercadal (DOM,*util.js): Oct 10, 2012
    - William Lightning (UltraVNC repeater): Oct 10, 2012
    - Mike Tinglof (tight encoding): Oct 15, 2012

Update to websockify febaeee85c

Gracefully handle errors when popping kwargs:
https://github.com/kanaka/websockify/pull/53

This change pulls websockify 6d9deda9c5.

Most note worthy changes:
- Pulls in web-socket-js 7677e7a954 which updates to IETF 6455 (from
  Hixie)
- Binary support detection and use in include/websock.js
- Add ssl and unix target support
- Add multiple target support via config file/dir.
- Idle timeout exit

The current grep pattern matches also port numbers that match only
partially the given $PORT number; e.g., if $PORT is 6080, 60800 will
match as well.

While TCP listening sockets in the 60000-65535 range are rare, they
need to be handled as well. The problem is also present if the user
selects a shorter PORT value with the --listen command line argument.

By adding a space, the pattern is fixed.

This reverts commit 4dd1bb1e.

Pull in version 376872d99.

Several changes including:
- binary/typed array support in websock.js
- unix socket support
- multiple target support via config file(s)
- prefer IPv6 option

default_flagfile has been removed from the nova trunk in favour of .ini files (https://github.com/openstack/nova/commit/7e3e9b8e9cea4f1bf78d127ffb915b79c854fdbe)

Fix python 2.4 CClose exception handling.

 * rpc flags now must be manually initialized.

 * Adds the nova-novncproxy binary, to provide support for vnc + OpensStack nova
 * Adds the ability to pass an auth token in via url, which is subsequently
   passed back to the proxy as a cookie.

Pull from websockify: 008a5118e728.

Should address issue https://github.com/kanaka/noVNC/issues/107

- Also add ability to force use of web-socket-js using
  window.WEB_SOCKET_FORCE_FLASH

- in websock.js, for rQshift*, assume length is the full length if not
  specified.

Compare the first byte of the handshake against numbers (character
code) as well as string characters.

Pull websockify 724aa3a.

- Use array module for unmasking HyBi when no numpy module is
    available.

- Detect client close properly when using python 3.

- Print request URL path is specified.

- New option --run-once will exit after handling a single WebSocket
  connection (but not ater flash policy or normal web requests).

- New option --timeout TIME will stop listening for new connections
  after exit after TIME seconds (the master process shuts down).
  Existing WebSocket connections will continue but once all
  connections are closed all processes will terminate.

Pull from websockify 1c39c7f1f001.

Pull from websockify 6e26306.

Pull from websockify ada02f2.

Pull from websockify 0da91c7.