Introduce sampling of expressions only if not yet sampled.
Setup notes and ProbAnd function in uncertainty analysis.
Performance improvement for probability calculations.

House events are handled earlier to reduce the size of cut sets or
delete them.
Indicate if basic events and expressions are constant and do not need
sampling.
Configure probability and uncertainty analysis constructors.
Simplify house event detection for probability analysis.
Implementation of Monte Carlo uncertainty analysis.

There must be a bug in expressions that is giving wrong results for
sampling.
Resolve Coverity reported issues of uninitialized variables and
unrecovered stream states.
Merge branch 'develop' into coverity-scan

Conflicts:
	doc/speedlog.txt