* Update files in src/plugins

Change-Id: Ia5d77fad7d19d4bb3498e78661982f68729adb22
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

Change-Id: I711d5fb475ef814a1dc9d2822740e827f3f67125
Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>

Change-Id: I3c22ef2685d7aa589f5d0ab74d693653a4c32082
Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>

This mainly takes CppEditorSupport apart.

* Parsing is now invoked by CPPEditorDocument itself by listening to
  QTextDocument::contentsChanged().

* Upon construction and destruction CPPEditorDocument creates and
  deletes an EditorDocumentHandle for (un)registration in the model
  manager. This handle provides everything to generate the working copy
  and to access the editor document processor.

* A CPPEditorDocument owns a BaseEditorDocumentProcessor instance that
  controls parsing, semantic info recalculation and the semantic
  highlighting for the document. This is more or less what is left from
  CppEditorSupport and can be considered as the backend of a
  CPPEditorDocument. CPPEditorDocument itself is quite small.

    * BuiltinEditorDocumentProcessor and ClangEditorDocumentProcessor
      derive from BaseEditorDocumentProcessor and implement the gaps.

    * Since the semantic info calculation was bound to the widget, it
      also calculated the local uses, which depend on the cursor
      position. This calculation got moved into the extracted class
      UseSeletionsUpdater in the cppeditor plugin, which is run once the
      cursor position changes or the semantic info document is updated.

    * Some more logic got extracted:
	- SemanticInfoUpdater (logic was in CppEditorSupport)
	- SemanticHighlighter (logic was in CppEditorSupport)

    * The *Parser and *Processor classes can be easily accessed by the
      static function get().

* CppHighlightingSupport is gone since it turned out to be useless.

* The editor dependency in CompletionAssistProviders is gone since we
  actually only need the file path now.

Change-Id: I49d3a7bd138c5ed9620123e34480772535156508
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

...in order to be able to full-rehighlight on the next turn.

The following sequence was problematic:

1. recalculateSemanticInfoDetached(true)
   * e.g. triggered by opening the document
2. recalculateSemanticInfoDetached(false)
   * e.g. triggered by moving the cursor
   * cancels 1. and leads to incompletely parsed/checked document - OK
3. startHighlighting()
   * triggered by 1.; starts highlighting on incomplete document - OK
4. startHighlighting()
   * gets a completely parsed/checked document - OK
   * not forced, so just compare revisions; they are the same, so
     skip/return - a partly highlighted document is left behind.

Task-number: QTCREATORBUG-11367
Change-Id: Ic56e00e862ec4a1ffa197b2fc8b48be56a3562de
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Change-Id: Ib5423fdd064e4546f848c0b640b0ed0514c26d3a
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

Remove SemanticInfo::hasD and SemanticInfo::hasQ. They were used in
CPPEditorWidget::highlightUses() but became superfluous by filtering out
invalid Uses.

Change-Id: I08f46e55cf42fbc6088fbcb03e30822421df57d6
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

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

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

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

This way the editor does not need to know all the details of
instantiating or maintaining classes for highlighting and/or completion,
it can just ask the model manager. The change also enables different
highlighting- or completion-engines without changes to the cppeditor.

Change-Id: I8000d9d9fe446b292defddb2295493cf77d0f14a
Reviewed-by: Leandro Melo <leandro.melo@nokia.com>

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

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

Change-Id: I8b73d583be1ee7183f4074bce49d5390e38631a2

Reviewed-by: hjk

 * Make sure all non-empty source files found below ./src have
   a copyright header.

Reviewed-by: con

Reviewed-by: Daniel Molkentin
Reviewed-by: Friedemann Kleint

This removes the all hard dependencies to and from welcome screen,
except the one to the core plugin. More in detail:

- Add IWelcomePage to add a tab to the welcome screen
- Move tabs in the modules where they belong
- Enables QHelpManager to open help fullscreen and contextually
- "Getting Started" moves to Qt4ProjectManager
- Projects & Sessions (aka "Develop") moves to ProjectExplorer
- "Community" remains in the welcome plugin for simplicity