fmbtandroid: fix visuallog file open/close policy
fmbtandroid: area support to waitOcrText
fmbt.py: simulated() function added

This function returns True if an AAL/Python block (like a guard or a
body) is executed as a part of a simulated test run. This helps, for
instance, printing debug messages only on real test steps.
Merge remote-tracking branch '01/devel'