fix headless-build on linux

in such cases, DISABLE_HEADLESS was unset and hence
the expansion -a -eq 0 resulted in a bash error:

bash: [: too many arguments

this is fixed now by using string-based comparison

http://code.google.com/p/phantomjs/issues/detail?id=197
simplify maintenance of custom qt-patches during deployment

generic patches now reside in deploy/qt-patches/all
while 4.8 patches are now in deploy/qt-patches/4.8

all *.patch files in these folders are applied during deployment

http://code.google.com/p/phantomjs/issues/detail?id=197
http://code.google.com/p/phantomjs/issues/detail?id=142
A REPL for PhantomJS

This covers [Issue 252](http://code.google.com/p/phantomjs/issues/detail?id=252)

The commit is composed of 12 squashed commits:

commit efdc6ba4f143c30a690fd97d92d80fa412e79999
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Mon Feb 27 00:19:36 2012 +0000

    Pretty-pringing and Completion Caching done!

    * This completes pretty-printing for the result of evaluated
    * expressions in the REPL.
    * Also, now we cache the "possible completions", to speed things up
    * a bit (nothing fancy though).
    * Minor tweaks to the internal doc and the way we "mock"
    * pretty-printing for QObjects/REPLCompletanle
    * All tests passing :)

commit 1f9ef690e112a535b431fca409b77bb9c09d1c70
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Sun Feb 26 22:35:00 2012 +0000

    Moving most of REPL shim JavaScritp code in a separate file. Way
easier to work on.

commit 02d460a16fee14e7096ae7d899c03902c5b8a9c6
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Sat Feb 25 20:25:18 2012 +0000

    Initialisation of the Completions is now done in a pure virtual.

    This means that every REPLCompletable object will ACTUALLY register
completion strings, ONLY if we are running a REPL
    and that object is ACTUALLY created.
    Otherwise, why bother?

    Adding completions for all exposed REPLCompletable objects

    Also, fixed an issue with _getCompletions()

commit 412c3778fb04aa1c7379f8e760afce702b0428dd
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Tue Feb 21 00:49:17 2012 +0000

    Few more tweaks to the REPL:

    - Now 'phantom' is the first QObject with proper completion
    - No repetition in QObject completions
    - LVAL of any user expression is now correctly prettified and
      printed

    Major things left to do:

    - Cache completions (using QCache?)
    - Add completions for the other QObject
    - When the LVAL of a user expression is a QObject, print what's
      expected, not the QObject "real" structure

commit 46f04713c8165d898055e15478bb31403f8c93f1
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Tue Feb 7 10:13:23 2012 -0800

    Pretty-print expressions result

    Still not done though: there are issues with the NON-Native JS
objects.

commit 98b2fe67651dc750b62c6fa9cf1d80317fd9ae06
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Fri Feb 3 00:22:52 2012 -0800

    Introducing REPLCompletable.

    This class should be inherited by any JavaScript-exposed QObject, to
ensure correct Auto-Completion.

    Correct auto-completion for QObjects.

    - Now even QObjects can correctly provide auto-completion, and avoid
      showing "not for users" methods
    - The strings used for the auto-completion are stored in a single
      Index: minimum memory footprint
    - Still, there is optimization that should be done (when "searching"
      for the right completion by prefix)
    - Completion for the objects not set up yet, but now it's just a
      trivial sequence of "addCompletion('bla')" in their constructors

commit 9bd48618154b1530a37b41f4060440184e23253d
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Thu Feb 2 00:20:25 2012 -0800

    Changing the way we import Linenoise.

    Will just import a specific commit, and update manually when needed.

commit cfc9bae9fbdab13b01019b34b7cbd565e3153780
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Sun Jan 29 23:22:26 2012 -0800

    Made the REPL into a Singleton. With Auto-completion!.

    Reasons:
    1) Needed a pointer to function (i.e. a static method) to be used
with Linenoise to provide auto-completions
    2) It makes more sense, as it's not like we are going to have 2 REPL
running at the same time, are we?

    There are problems to address:
    - the enumeration in JS seems to return only the native interface of
      our objects
    - the function completions contain argument types of those functions
    - "private" methods are exposed

commit c78bd32e17f8e0e4cc4a0066858de8cc81d33b97
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Sun Jan 29 22:10:20 2012 -0800

    Migrating from the original, now [unmantained
Linenoise](https://github.com/antirez/linenoise) to the fairly active
[tadmarshall fork](https://github.com/tadmarshall/linenoise).

    Also now the project is imported as a Git Submodule.
    Having migrated to the latest Linenoise (see prev. commit), now this
_SHOULD_ work on Windows too.
    But, of course, this needs testing. :)

commit 43713c5723d7c5ed446ba41ae8d6f8c9feba7f9b
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Tue Jan 24 23:17:06 2012 -0800

    Now that the basics work, I'm adding support for REPL history.

    This is something almost everyone today is accustomed to.
    Also, now REPL history works!
    And I found some useful resources to solve pending TODOs.

commit 31e5f88b044a5b4a823c67527ef8c245d2ac7863
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Sun Jan 22 20:56:36 2012 -0800

    Adding Linenoise Project (https://github.com/antirez/linenoise).

    For now is included as a drop-in set of files.
    Later on, if the Linenoise project has frequent
    updates, we might prefer to do it as a
    git-submodule.

commit 4be9c15c65db4767e482fba0be13f8aab286d5f3
Author: Ivan De Marino <ivan.de.marino@gmail.com>
Date:   Thu Jan 5 15:31:13 2012 +0000

    First simple REPL implementation.

    - Not complete
    - Still doesn't handle arrow keys (needed for history)
Add the missing usage info on REPL.

http://code.google.com/p/phantomjs/issues/detail?id=252
Change follow.* example to Twitter accounts of PhantomJS contributors.

http://code.google.com/p/phantomjs/issues/detail?id=405
Adding short version of "--help" and "--version" command-line arguments.

This covers [Issue #408](http://code.google.com/p/phantomjs/issues/detail?id=408).
Without arguments, functions must use parentheses in CoffeeScript.

http://code.google.com/p/phantomjs/issues/detail?id=326
Qt import: Do not force the use HarfBuzz on Mac.

Configure option -harfbuzz breaks Linux build.

http://code.google.com/p/phantomjs/issues/detail?id=226
Qt import: Use a customized src.pro.

We need to exclude building SQL, TestLib, and plugins.

http://code.google.com/p/phantomjs/issues/detail?id=226
Qt import: Sync with the steps in deploy/build-helper.

http://code.google.com/p/phantomjs/issues/detail?id=226
Qt import: Don't use module include.

In the current state of our imported minimalistic Qt, some header files
are missing. Since the module include like <QtGui> just includes
everything, this leads to a preprocessor error.

The solution is to include only needed headers from particular class.

http://code.google.com/p/phantomjs/issues/detail?id=226
Qt import: use static build on Linux only.

http://code.google.com/p/phantomjs/issues/detail?id=226
Qt import: Script to build everything, for Linux and Mac OS X.

http://code.google.com/p/phantomjs/issues/detail?id=226
Qt workaround to prevent WebCoreMovieObserver confusion.

See the previous commit 30134bab5d4eb2cad76747cd69159140785d6cc3.
This is just applying disable-quicktime-video.patch.

http://code.google.com/p/phantomjs/issues/detail?id=321
Enable remote debugging.

This is just applying enable_debugger.patch.
See also https://github.com/ariya/phantomjs/pull/173.

http://code.google.com/p/phantomjs/issues/detail?id=6
Fix remote inspection to work.

This is applying fix_inspector.patch.
See also https://github.com/ariya/phantomjs/pull/173.

http://code.google.com/p/phantomjs/issues/detail?id=6
Headless and PDF printing fixes.

This is just applying headless_and_pdf_fixes.patch.
See also https://github.com/ariya/phantomjs/pull/173..
Fix file upload on Qt 4.8.

This is just applying enable_file_input_click.patch.

See the previous commit 00a8e72fb306d0cedca399425a11b862f2fb27ea.

http://code.google.com/p/phantomjs/issues/detail?id=307&q=upload
WebKit: Turn off accelerated compositing.

Compositing depends on Graphics View and/or GL-based texture mapper.
Since we don't plan to support either of them, at least for the near
future, we might as well disable compositing.

http://code.google.com/p/phantomjs/issues/detail?id=414
Qt Gui: Disable Graphics View.

Graphics View is not needed for PhantomJS.

http://code.google.com/p/phantomjs/issues/detail?id=414