Merge pull request #6 from deztructor/master

[subscriber] actor thread should quit before application
[rpm] subscriber requires statefs-qtX with the same version

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
quit/wait in Actor specialization

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
[subscriber] handler as Qt object cares about unsubscription better

Signal can be already null and handler on deletion cares about signals
too

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
Merge pull request #7 from nemomobile/dont-disconnect-dead-signal

Don't disconnect dead signal
[property] avoid receiver buffer overflow in some cases

Logical error: receiver byte array resized w/o taking cap into
accout. Do it properly and check is it ok when reading. Also do not
allow to grow buffer indefinitely.

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
Merge pull request #8 from nemomobile/fix-buffer-overflow

[property] avoid receiver buffer overflow in some cases