Introduce Dumper.put{Value,Name,StringValue,ByteArrayValue} functions.
No need for explicit specification of valueencoding in user code.

- add an 'informative' mode, similar to old dumper's 'protocol 1'
- remove some hard coded names for std container dumpers
- use safePutItemHelper instead of putItemHelper in most places

Reviewed-by: kh1

Reviewed-by: ck

In case one stoped the running application on the device, removed the
project from the IDE and then closing the app output window would crash.

Move the code that compares the Qt version's debug|release property
with the build configuration's debug|release property
to the new build configuration class.

Reviewed-by: dt

Complements 275146af

Task-Number: QTCREATORBUG-386

Reviewed-by: dt

done with thorbjorn

Moved Completion::getCompletion() in ICompletionCollector and made the filtering of completion items more C++ friendly.

Reviewed-by: kh1