Merge pull request #73 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/evaluated_args_check to master

* commit '044fbb70':
  enable passing tests
  ReadVariableNodes with generated names are still syntax nodes
  check that arguments are simple expressions before optimizing them via EvaluatedArgumentsVisitor

Merge pull request #74 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/visibility-refactoring to master

* commit '9cbe227a':
  Removed now unnecessary 'recursive' flag from Identical
  Add test cases that exercise output visibility corner cases
  FastPath handles new visibility properly
  Remove VisibilityController interface
  Replace forceVisibility for RContext.setVisibility
  Removed controlVisibility calls from RBuiltins
  Fixed VisibilityController implementors that are not built-ins
  Replaced inherited RInvisibleBuiltin with annotation
  RBuiltins annotated with visibility matching GnuR

This flag was used for handling visibility. With the new system,
it is not necessary anymore.

Merge pull request #70 in G/fastr from ~MICK.JORDAN_ORACLE.COM/fastr:feature/fastr-builtin to master

* commit '6064242b':
  final cleanup of RCallNode.getSyntaxLHS/HiddenInternalFunctions
  minor cleanup of RCallNode.getSyntaxLHS (debuggability)
  Fix RCallNode.createCloneReplacingArgs creating nested ForcePromiseNode
  start fix for internal error tracing startup

Builtins now have visibility controlled through their annotation and
other nodes explicitly call RContext.setVisibility

Visibility for those nodes will not be handled by common built-in invocation code,
instead they are setting the visibility directly through RContext if necessary.

Merge pull request #71 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/various_changes4 to master

* commit '4524c682':
  enable passing test
  fix more ReadVariableNode calls with null frames
  special case in RMissingHelper for eager promises
  update cached function in RCallNode generic case
  do not produce optimized promises in RCallNode generic case
  unwrap VirtualEvalFrames when creating environments
  never call ReadVariableNode without frame (can lead to NPE during promise evaluation)
  modify lapply to simulate the correct call structure
  provide "Ignore Whitespace" flag for tests
  add output for new lexer test
  various cleanups
  properly throw recognizer errors from the lexer
  various small fixes (imports, unused fields)
  enable passing tests

Add FastRDebugTest

* commit 'ab1f67f9':
  update Truffle version
  Added FastRDebugTest

* master:
  remove .fastr.dumptrees builtin
  update Truffle version
  Regenerated tests.
  A fix to the deparser.
  Added the "contains" annotation to the generic specialization.
  Added a generic specialization to mapply.
  Signature of mapply cannot contain empty strings.