Fixes f1fb0bdd.

Reviewed-by: Kai Koehne
(cherry picked from commit 528999d5)

Set complete build environment (MinGW).

Reviewed-by: Christian Kamm <christian.d.kamm@nokia.com>
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

Task-number: QTCREATORBUG-2883
(cherry picked from commit f1fb0bdd)

Fixes f1fb0bdd.

Reviewed-by: Kai Koehne

Set complete build environment (MinGW).

Reviewed-by: Christian Kamm <christian.d.kamm@nokia.com>
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

Task-number: QTCREATORBUG-2883

Task-number: QTCREATORBUG-2639
Reviewed-by: Thomas Hartmann

To make plugin dumping work without having to compile the debugging
helpers explicitly.

Reviewed-by: Kai Koehne

Reviewed-by: Erik Verbruggen

Explicitly delete the root project item when closing a QmlProject.

Previously, the model manager always had exactly one import path - but
you can open more than one Qml project at once. Now, we store the union
of all import paths in the model manager.

Reviewed-by: Roberto Raggi

Task-number: QTCREATORBUG-1609

the method name got changed in 5732a440.

When adding a new file, refreshing semantic errors in the open editor should
have worked. It now also works for removing existing files.

Done-with: Christian Kamm

When adding a new file, refreshing semantic errors in the open editor should
have worked. It now also works for removing existing files.

Done-with: Christian Kamm

The QML task manager behaviour is to show warnings/errors for _saved_ files
only.

Previously we just scanned every directory containing a qml file for
other qml files.

This makes import ".." work.

Reviewed-by: Erik Verbruggen

Reviewed-by: Roberto Raggi

See c722282c.

Suggested by Erik Verbruggen

* Fill the snapshot with files that could be imported.
* Implement package imports.

* The qmldir file is not parsed yet.

Reviewed-by: Erik Verbruggen

Use a lowercase .qml file found in project tree if no current file is
selected. This way we don't have to disable run controls if there are
some files to execute.

Reviewed-by: kkoehne

All files have been renamed from Qml to QDeclarative.
Registration of types is now done in an initializer method.

We used to fail back to the old format if the .qmlproject file
was invalid. Anyhow, this lead to weird effects ... better disable
it explicitly.

That no warning is shown right now when loading an invalid qmlproject
file is a bug in coreplugin.

metatype redefinition

Check for the case that a new file to be added to a .qmlproject
is also automatically covered e.g. by a wildcard filter. In this
case we don't have to do anything.

The new QML Inspector depends on DebuggerPlugin. Also added a dropdown menu into
the debugger toolbar from which the user can select the used debugging
language, e.g. C++ or QML.

Putting every class in it's own files + avoid "using namespace"

 * Ease cross device development by introducing 'targets' which
   group build- and runsettings that are valid for this one target

 Most of the kudos for the code review go to dt. Con, thorbjorn,
 ckandler and others did also review parts of this patch.

Reviewed-by: dt

 * That is what everybody else is using now.

Reviewed-by: dt

 * This makes it easier to distinguish projects in the
   userfileaccessor

Reviewed-by: dt