Adds a showWrapIndicator(parent) method to IFindSupport, to be used by
implementations. First implementation is given for the BaseFindSupport
that's used for all searches in Q(Plain)TextEdits.

Task-number: QTCREATORBUG-2753

Now rendering is only happen if no changes happen anymore.

Reviewed-by: Christian Kamm

Reviewed-by: Christian Kamm

We have a proper fix for 2.2.

Task-number: QTCREATORBUG-3486

Task-Nr: QTCREATORBUG-2723

 * Move the environment model code to utils and export it
 * rename the environmenteditmodel files to environmentwidget
   (which is the class they actually contain)

Reviewed-by: dt

Introduced by recent ProxyAction refactoring, we may not copy the actual
enabled/visible/checked state during initialization.

Regression introduced in 17d11b7b.

Much faster.

Instead of doing context magic which doesn't reflect what actually was
meant: The actions are different commands, but the button should be
corresponding to different commands in different states.

Fix git show using the default format the first time it gets used.

Task-number: QTCREATORBUG-3412

But still slow.

There was no reason, and using QAction is more flexible.

A generic action that acts as a proxy for another (changeable) action,
like it is used for mostly all of the visible actions in Qt Creator
through the action manager.

Task-number: QTCREATORBUG-3490

Fix 07cac219.

Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

Reviewed-by: con
Reviewed-by: Friedemann Kleint

Toolchains can't hold a pointer to the qtversion for which they were
created. Copying QtVersions does not clone toolchains instead they are
held via a shared pointer. Thus the original qtversion for which the
toolchain was created might not exist anymore.

Reviewed-By: ck

Task-Nr: QTCREATORBUG-3435

Reviewed-by: Friedemann Kleint