- 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.

Merge pull request #619 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/postprocess_args to master

* commit 'ef07d869':
  make ArgumentStatePush multithreading-safe, cleanup arg state handling

Merge pull request #618 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:bugfix/enable_passing_tests to master

* commit 'ee53bd4a':
  enable passing tests, fix some error messages

Merge pull request #616 in G/fastr from ~ZBYNEK.SLAJCHRT_ORACLE.COM/fastr:extBuiltinsCasts to master

* commit '676b72bb':
  The names attribute propagated to empty vectors
  Empty vector handling fixed in the cumulative builtins
  Copyright and other minor fixes
  Cast pipelines added to external builtins. Some tests added too.

* commit '8597e4c8':
  generated expected output messages
  .colonAscending(int, double) and .colonDescending(int, double) should return RIntSequence or RDoubleSequence depending on 'right' parameter being in integer range or not.

Merge pull request #617 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:bugfix/remove_arg_comments to master

* commit 'c92b30a2':
  remove unnecesarry end-of-line comments, remove unnecessary newlines

return RIntSequence or RDoubleSequence depending on 'right' parameter
being in integer range or not.

* commit '08aac059':
  generated expected output messages
  overflow problem in sum builtin
  added Output.IgnoreCase TestTrait

Merge pull request #613 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/bindist-unlist to master

* commit '369f8e22':
  unlist supports pairlists
  Stats: port external C_BinDist

* commit '431bc2c8':
  doc: refine testing.md
  add documentaion on unit/package testing

Merge pull request #607 in G/fastr from ~MICK.JORDAN_ORACLE.COM/fastr:bugfix/revertnativeproject to master

* commit 'fb93cb20':
  add back Eclipse .project files for native projects

* commit '9af956c5':
  Update copyright year in file headers after merge
  Add build support for Linux/SPARC