added 'getParent' to Pseudocode

fixed AbstractVariablesDataTest:
variable data shouldn't be built for locals as independent declarations
added 'mergeDataWithLocalDeclarations' option
  for collecting variable data for pseudocode

  removed using data from outer context
  for local declarations for 'variable initializers' analysis
improved postProcess:

collect (and cache) reachable instructions for local declarations
after processing all parent instructions