Add Qt 4.8 support to deploy script, along with some patches to qt

[lfranchi]

This adds support for building Qt-4.8 from git with some patches to the build script. You might not want all of those patches so I'll describe them below.

• This adds a --qt-4.8 parameter to the script. That will trigger a git checkout and the 4.8 codepaths
• This also adds a --headless parameter that may be passed in along with --qt-4.8. This makes it a lighthouse build
• This disables static builds for Qt 4.8. QtWebkit-2.2 cannot be built statically. As far as I am aware this cannot be worked around; the splitting up of WebKit into WebCore/WebKit/WebKit2 leads to cyclic static dependencies that cannot be satisfied.
• I suck at bash so I apologize in advance. Comments welcome.

qt48_enable_debugger.patch

Hardcodes the script debugger to enabled. Hacky, but the user won't have to manually enable the script debugger on startup this way---we know she wants to be debugging it if she's using the inspector.

qt48_fix_inspector.patch

The meat of the work. This updates the websocket code to support versions >6 so that newer Webkits can be debug clients. It also fixes a few bugs in the inspector backend that makes the inspector fail. I've not had these extensively reviewed upstream yet but I'll be grabbing jturcotte on irc soon.

qt48_headless_and_pdf_fixes.patch

Patches for Qt's QPDF QPrinter backend merged from the wkhml project. Also contains modifications to the 'minimal' lighthouse platform plugin to support fonts. Allows for a fully-functional headless backend when using Qt 4.8 configured with -qpa.

[lfranchi]

Oh, one more thing---of course these patches are all real git commits in clones of the respective projects. Once you've merged the phantomjs-experimental building branch, I'm more than happy to merge them into whatever repo you would like to use.

[ariya]

Looks awesome indeed!

One minor thing: presumably once Qt 4.8 we can just download the tarball vs clone the repo?

[lfranchi]

Yep, once it's released we can just do the tarball and apply the patches to that. Thanks!

[ariya]

Does static build works?

[lfranchi]

No, no static build of QtWebkit. See my comment in the pull request description---the official line from darktears at least is that it's impossible.

[ariya]

While we look for 4.8 static solution, can you fix the configure so that it's still static build for compiling it with 4.7?

[lfranchi]

Hmm it should still do that... see line 83 or so of the build script?

[ariya]

Ah, you're right! I screwed up my build, nothing is wrong with the script. Thanks!

[ariya]

The funny thing is that static build on Mac works (see the Mac version of the script)

[lfranchi]

Interesting... I guess the ld on os x is a bit more lenient?

Once webkit/qt is built as a part of phantomjs it should be fixable---it might be enough to disable webkit2 building maybe? Not entirely sure, I can't remember which modules are interconnected.