Changing the python print signature seems to cause
problems on Windows, so revert it.

Change-Id: I715f792b880a2269ec153bbc73b432c6a4e87cc5
Reviewed-by: Michael Brüning <michael.bruning@theqtcompany.com>

When QtCreator loads qtwebengine.pro some parsing errors
are shown if it picks up the system python3 for basic detection.
Although we do not plan to support python3 with all of our
scripts (since Chromium does not) these simple cases can
be fixed by using the function version of python's print.
This patch also adds the Chromium source path to the core
INCLUDEPATH so that Chromium headers are indexed as well.

Change-Id: Ia6dec1c776fdcddf875fb8e814d8fb33b7340989
Reviewed-by: Michael Brüning <michael.bruning@theqtcompany.com>

This only move files without adjusting any paths.

This moves:
- lib/quick -> src/webengine/api (API files)
  lib/quick -> src/webengine (other files)
  This contains the main QtWebEngine module library since
  <ec7b2ee7

>.
- lib/widgets -> src/webenginewidgets
  Also rename this directory to match its module name and rename Api to api.
- lib -> src/core
- process -> src/process
- resources -> src/core/resources
- tools/* -> tools/scripts/

The build directory is spread as follow:
- build/build.pro -> src/core/gyp_run.pro
- build/qmake_extras/* -> src/core/ (for the host and target .pro files)
- build/qmake -> tools/qmake
- Build related scripts -> tools/buildscripts

Change-Id: I0cded1de772c99c0c1da6536c9afea353236b4a1
Reviewed-by: Zeno Albisser <zeno.albisser@digia.com>
Reviewed-by: Pierre Rossi <pierre.rossi@gmail.com>
Reviewed-by: Andras Becsi <andras.becsi@digia.com>

We shouldn't try to run moc on such files...

And subsequently clean up the manually checked-in moc file.