Instrumenting MasterCompute class as well
Bug fixes and enhancements for MasterCompute instrumentation

Handling final modifier removal by renaming of @Intercept methods whose
new names are specified by renameTo attribute, e.g.,
`@Intercept(renameTo="getAggregatedValue")` annotation on
`AbstractInterceptingMasterCompute#getAggregatedValueIntercept()`.
Instrumenter analyzes MasterCompute to find all Computation classes involved

Unless Computation classes are specified manually, instrumenter will
automatically analyze the given MasterCompute class (and its
superclasses) to find all Computation classes it refers to, either
directly or by simple String indirection, regardless of whether it was
passed to setComputation() or not.
Reduced instrumenter noise

by logging mostly as debug level
Merge pull request #37 from netj/instrument-master-compute

Instrument master compute