Merge pull request #636 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/complete-s3-dispatch to master

* commit '14540176':
  small cleanup and @CompilationFinal in REnvironment
  Internal and group generic dispatch honors __S3MethodsTable__

Merge pull request #633 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/seq_along_dispatch to master

* commit '54458ffa':
  seq_along dispatches to length for objects with class

Merge pull request #634 in G/fastr from ~ZBYNEK.SLAJCHRT_ORACLE.COM/fastr:extBuiltinsCasts3 to master

* commit 'ab4cc527':
  CP added to Rprof and R_getGeneric. CP fixed in Floor, Ceiling, Trunk and Round.

Merge pull request #625 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/cached_format_cleanup to master

* commit 'f67b43b3':
  fix formatting of @Cached arguments

Merge pull request #630 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/names_lookup_hashing to master

* commit 'f73e1019':
  use hashing for large name lookups, create Collections class

* commit '56f5b397':
  simplify RAbstractVector (remove setNA) and PositionCheckSubsetNode, incMod with profile

Merge pull request #623 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/callmatcher_fast_path to master

* commit 'f4dc078d':
  support fast paths in CallMatcherNode

* commit '2b762cd5':
  fix cumulative functions and add tests
  unify fmod functions and improve BinaryArithmetic.Mod

Merge pull request #631 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:bugfix/rcallnode_empty to master

* commit 'ce332725':
  transferToInterpreter on REmpty in RCallNode

Merge pull request #626 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/shareobjectnode_opt to master

* commit '476aeb45':
  optimized ShareObjectNode

Merge pull request #622 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/doc_generic_goals to master

* commit '97ba697b':
  add generic goals to README.md

* commit 'ce2df48e':
  seq: add additional fast-path specializations

Merge pull request #628 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/small-fixes to master

* commit '3be15b7e':
  Unify double/int sequences: they can have length==0
  More robust stack trace
  Sprintf: handle '%g' with integer argument
  Simple implementation of recordGraphics internal
  Small fixes in RFFI

- Rf_duplicate accepts RDoubleSequence
- .Call builtin allows the 'list' parameter to change

* commit '742f3270':
  generated expected output messages
  type.convert of hex literals always returns double
  different warning for hex and dec integer literals
  string2DoubleNoCheck should handle non integer hex literals
  fixed typo

Merge pull request #620 in G/fastr from ~MILOSLAV.METELKA_ORACLE.COM/fastr:TruffleRLanguageInteractive to master

* commit 'f07c85cd':
  Implemented TruffleRLanguage.toString(RContext context, Object value) and isVisible() to work properly in GraalVM shell and Interop.

Merge pull request #624 in G/fastr from ~ZBYNEK.SLAJCHRT_ORACLE.COM/fastr:extBuiltinsCasts2 to master

* commit 'ebd3ae65':
  Cast pipelines added to another batch of ext builtins

Implemented TruffleRLanguage.toString(RContext context, Object value) and isVisible() to work properly in GraalVM shell and Interop.