Now that we have 2.0 out we can be less strict when checking
project consistency when loading .user files.  The strictness
was necessary due to upgrading non-target projects to target
projects.

 * Allow for invalid Qt versions when loading a .user file that was not
   updated from the pre-target era.
 * Update the UI to show invalid Qt versions as invalid. Remove
   the Invalid version as soon as a valid one is imported.

This does preserve the buildsteps, too.

 * Add more information into the updated map of .user-file data:
    * Version from which we updated
    * File name of the old .user-file we saved away

 * Make the keys available to projects from as constants defined
   in ProjectExplorer::Constants

Reviewed-by: Alessandro Portale

Set environment variable to force GCCE version when running qmake
for symbian. This is only relevant for the SBSv2 build system.

Reviewed-by: kh1

This affects how files are identified by the MIME database.
Although this is a general improvement, it was triggered by the following bug report.

Task-number: QTCREATORBUG-1793
Reviewed-by: Friedemann Kleint

Revised-by: Tobias Hunger

extract thread names from QThread object name

Task-Number: QTCREATORBUG-382
Reviewed-by: hjk

namespace (from Debugger::Internal) as they are exported classes.
Introduce private classes to avoid exposing private JS debugger
headers.

By introducing a function, which does the hard work

By using a function, which we evaluate in the right context we end up
with the project tree we want

Reviewed-by: Thorbjorn Lindeijer

Merge-request: 177
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

Reviewed-by: dt

Nodded-at-by: dt

Reviewed-by: hjk
Reviewed-by: Christian Kandeler <christian.kandeler@nokia.com>

Task-number: QTCREATORBUG-2322

Reviewed-by: Tobias Hunger

It was badly positioned esp. in OS X and Windows.

to identify actions etc.

Reviewed-by: kh1