MIMemoryTest.writeCharVarying{Address,Offset}
When we switched SyncUtil.readMemory to use queries, it exposed a race
condition with the asserts that check for the number of event received.
Basically, nothing guarantees that when the assert is evaluated the
event had the time to arrive.
We now use a ServiceEventWaitor to wait until the event arrives (with a
timeout, of course).
At the same time, rename word_size to wordSize.
Change-Id: I6f4b51e22f46625e20bbbdbac91cf70cfd864e5e
Signed-off-by: Simon Marchi <simon.marchi@polymtl.ca>