Based on type hierarchy.

Added to context menu ('Open Include Hierarchy')
Shortcut(Ctrl+Shift+I)

'Include Hierarchy' contains:
FileName for which 'Include Hierarchy' is done
Includes(which files are included by current file - tree hierarchy)
Included by(which files include current file - tree hierarchy)

It is possible to open/goto each file by clicking on specific item.
Additionally for 'Included by' files it goes to the line where is include
directive for current file.

Change-Id: I549b1ed64e4c9f6955f60d00efb12950a3259f81
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

When we open project and do not open any file, then open 'Type Hierarchy'
(from combobox) we see "No type hierarchy available"(and this is ok). Then
if we open any file and we try to see 'Type Hierarchy'(Ctrl+Shift+T) then we
still see "No type hierarchy available"(and this is not ok).
It will also happens if we save a session with opened "Type Hierarchy".

This change fixes this. Additionally when we select something for which there
is no 'Type Hierarchy' then it displays "No type hierarchy available".

Task-number: QTCREATORBUG-9819
Change-Id: Ib6a152f481057098f3d8a4335bb2d4a31fc5e1ef
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

Change-Id: Ic6a9ff0359625021ebc061d22db6811814534205
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

Change-Id: I9fe462a61f32884b422ad402b18f17b44b60c7ab
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: David Schulz <david.schulz@digia.com>

Change-Id: Id79b69b271ad90c742a3884f8b818a7ee7f26a5b
Reviewed-by: hjk <qthjk@ovi.com>

Change-Id: Ice592c6de9951ee3b2c4cb52ed0bb3b6770e0825
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

This makes it possible to close all editors and still have
the typehierarchy visible. It used to close for no apparent
reason.

Change-Id: I4d1500b5402905c6a04623ea60247c9d746acab8
Reviewed-by: David Schulz <david.schulz@digia.com>

Current display doesn't make sense (to me :))

Active class is the middle one, derived classes should be top-down, but
base classes should be bottom-up. That's easier to understand.

Change-Id: I06693da37c834f5a99fd62ae29a91d958bafe136
Reviewed-by: Leandro Melo <leandro.melo@nokia.com>

Change-Id: I7134d7de30bcf9f9dcfad42520dd45ee083a852d
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

Getting the #include directives ready for Qt5. This includes the
new-project wizards.

Change-Id: Ia9261f1e8faec06b9285b694d2b7e9a095978d2b
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

Change-Id: I2b72b34c0cfeafc8bdbaf49b83ff723544f2b6e2
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

Instead, show it on a label above.

Task-number: QTCREATORBUG-6775
Change-Id: I7bf8e72c8a0ba1c07444230915d72b0cd9b66672
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

Change-Id: Ic793e01edf6a4d2fe61baadb3aa5bef817436d35
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

Change-Id: If18afb5d4665924e7d9250dccbc60a65e6daa75e
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

Now the type hierarchy widget will also show the classes
derived from the selected one. For consistency the way
the base classes are shown was changed too. The diagram
below is an example from Creator's code when openining
the type hierarchy for BaseTextEditorWidget:

Bases
 +QObject
  +QWidget
   +...
     BaseTextEditorWidget
 +QPaintDevice
  +...
    BaseTextEditorWidget
Derived
 +BaseTextEditorWidget
  +VCSBaseEditorWidget
    GitEditor
    MercurialEditor
    ...
   GLSLEditorWidget
   CppEditorWidget
   QmlJSTextEditorWidget
   ...

Depending on the project and on the selected class the
hierarchy widget might take a bit to be constructed.
This should be improved later.

Change-Id: Ifbdd1cbbba955a0bdf03297ff0e7620351b12dc5
Reviewed-on: http://codereview.qt.nokia.com/883


Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

Change-Id: I8b73d583be1ee7183f4074bce49d5390e38631a2

rename BastTextEditor->BaseTextEditorWidget, BaseTextEditorEditable->BaseTextEditor
rename BaseTextEditor{,Widget} subclasses
rename editableInterface->editorInterface
rename createEditableInterface->createEditor
minor cleanups after renamings

Reviewed-by: hjk

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

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

Merge-request: 176
Reviewed-by: hjk <qtc-committer@nokia.com>

Hierarchy information removed from tooltips now.