misc tests and fixing error::Error

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
QDebug instantiation can be heavy

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
increase SOVERSION

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
QObject pointers compatible with Qt ownership

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
tests.xml is not a program :)

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
simple lock wrapper

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
Merge pull request #1 from nemomobile/staging

A bit more functionality and new soversion