#160 Starting a ticker thread in QXK causes assertion

[LawrenceC]

Strarting a ticker AO in QXK causes an assertion in QActive_start, failing on the non zero queue length requirement pre-condition.

QXK QActive_start pre-conditions need to be modified to match those in the QK version.

[Quantum Leaps]

The preconditions in QXK QActive_start_() and QActive::start() (in QP/C++) will be weakened to allow zero-size queue (for the Ticker thread). This will be implemented in the next QP/C/C++ releases.

[Quantum Leaps]

The fix described above has been implemented in QP/C/C++ 5.9.0.
--MMS