Task-number: QTCREATORBUG-65

Also some const correctness.

Moving the logic out of BaseTextDocument for use at other places.

Reviewed-by: hjk
Reviewed-by: Erik Verbruggen

Currently used by the QML outline and C++ type hierarchy.

Reviewed-by: kkoehne
Task-number: QTCREATORBUG-2583

Reviewed-by: hjk
Reviewed-by: dt
Task-number: QTCREATORBUG-2038

Should have been done earlier. 2.1.80 was burned in the pre-2.1.0->2.0.1
days, and we'd like to have odd subminor for 'working' and even subminor
numbers for pure cherry-picking release branches anyway.

The generic highlighter already provided a method for this.
This method was then lifted to the base syntax highlighter
and it is now used by the profile highlighter.

Reviewed-by: Roberto Raggi
Task-number: QTCREATORBUG-2448

Now the plain text editor only tries to apply a highlight configuration
if the MIME type passed is valid. Otherwise, it should behave as an ordinary
trivial editor and should not miss a highlight definition.

There was an off-by-one error for the normal find scope.
Improved look by ignoring the left side.

It was refusing to stay at index 0.

Task-number: QTCREATORBUG-2472
Reviewed-by: Erik Verbruggen

Reviewed-by: Leandro Melo

And make use of it to accept on the command line the patterns:
"filename" "+45", "filename" ":23", "filename:12" and "filename+42"

Task-Nr: QTCREATORBUG-2428

Buttons Select All/Clear Selection/Invert Selection.

- Names of buttons, labels, dialogs, and methods.

While it was set to 2 for most editors, some editors, like the .pro file
editor, set another document on the BaseTextEditor, which then did not
get its cursor width set.

Also removed a duplicated line.

Reviewed-by: dt

Introduce some more private classes for the coreplugin,
use header include convention
<QtModule/QClass>, de-qobjectify VariableManager.

Only kde-config (and the defined paths) was being considered previously.

Reviewed-by: hjk

Rename 'QML standalone application' to 'QML application'
and the 'old-style' QML applications to
'QML Viewer based applications'.

For the QML renaming:
Rubber-stamped-by: Alessandro Portale <alessandro.portale@nokia.com>