Hmm even if the cached toolchain is correct, we do a few things, maybe
I should optimize it.

Makes the project pane look nicer.

Add `Find References' of a symbol to the context menu only when the environment variable QTCREATOR_REFERENCES is defined.

Now it should finally ask to regenerate in all circumstances. (If you
are using CMake from cvs.)

Made virtual newBuildConfiguration return a bool

Though there's still a bug in that canReadLine() returns false.

Directly in the wizard and save that to the settings. Also give feedback
if a wrong path was entered.

friends.

Also introduce mutex into DeviceContext.

Bug-number: QTCREATOR-154

resolving.