CDB: Add more information and state to Thread.
Refactor thread information in CdbCore classes to prepare for more
information.

Also properly initialize m_projectContext in Qt4Manager, fixing the
disabled "Run QMake" action

See BaseTextEditor::setRefactorMarkers(...). The markers support
a clicked signal via BaseTextEditor and tooltips. They feature
a cursor, but are always positioned at the end of the line (not block!).

As special gimmick they do extend the document width when they
are positioned outside the document area.

Patch mostly by mae.

Task-Nr:  QTCREATORBUG-1405

Task-number: QTCREATORBUG-1522

... by stripping out 'const', 'volatile', 'struct' and 'class'.

Reviewed-by: hjk

Fix got lost in merge resolution

With the context menu "Open with..." on files in project and file system
tree.

Reviewed-by: mae

Conflicts:
	src/libs/qmljs/qmljs-lib.pri
	src/plugins/debugger/gdb/gdbengine.cpp
	src/plugins/debugger/gdb/gdbengine.h
	src/plugins/qmldesigner/components/itemlibrary/itemlibrary.cpp

Often the reason for clicking the clear button is to type something into
it afterwards.
See also QTCREATORBUG-705

Also unify some method naming.
Use the new feature to add clear buttons to the Locator,
and the find tool bar.

Task-number: QTCREATORBUG-705

 * Gcc 4.5 reports fatal errors. Parse them correctly.

Don't use inferior calls anymore.

 * Add a taskhandler that shows the compile output that
   originally created the task.

Task-number: QTCREATORBUG-107
Reviewed-by: dt

 * Add a id that is uniquely identifying a task.

   Simplify operator == and qHash functions using this
   id.

 * Remove some code that was added in preparation for a patch
   that got rejected.

Reviewed-by: dt

Store threads and cache registers per thread in Snapshot.
As Trk does not generate Thread creation/deletion events.
try to add threads on the fly if a stop in a new thread id is reported.
Remove them in continue. Continue all threads in classic Trk.
Pass on state (crash reason) to ThreadData and model.
Factor out common code of both adapters to Snapshot/Symbian classes.

Because paths can get long, and text wrapping in QMessageBox will do the
wrong thing. Put the full file name into the details of the message box.

Task-number: QTCREATORBUG-1708

(cherry picked from commit 6959a122)

Conflicts:

	src/plugins/debugger/gdb/gdbengine.cpp
	src/plugins/debugger/gdb/gdbengine.h

(cherry picked from commit ebba2748)

Conflicts:

	src/plugins/debugger/gdb/gdbengine.cpp