qobject: Use 'bool' for qbool

qobject: Use 'bool' for qbool

We require a C99 compiler, so let's use 'bool' instead of 'int'
when dealing with boolean values.  There are few enough clients
to fix them all in one pass.

Signed-off-by: Eric Blake <[email protected]>
Reviewed-by: Andreas Färber <[email protected]>
Reviewed-by: Alberto Garcia <[email protected]>
Acked-by: Luiz Capitulino <[email protected]>
Signed-off-by: Markus Armbruster <[email protected]>