* commit 'a793d8ca':
  pkgtest/graalvm: Rscript is case sensitive

* commit '0b7db58f':
  introduce optimized visibility handling
  move setting and retrieving visibility into special nodes
  remove unnecessary calls to setVisibility
  explicitly configure visibility for fast paths, fast paths subclass RBaseNode instead of RNode
  introduce CallRFunctionNode and CallRFunctionCachedNode and route all calls through them
  cleanup RArguments.create functions and remove RArgumentsNode
  pass along signature in RArgumentsNode

remove explicit paths for the ASM libraries; add com.oracle.truffle.r.release project; remove FASTR distribution; add FASTR_RELEASE distribution; add custom projects for native/release

Merge pull request #280 in G/fastr from ~ZBYNEK.SLAJCHRT_ORACLE.COM/fastr:isFractionalFilter to master

* commit '20e68189':
  the "overloads" warning suppression added
  isFractional filter and doubleToInt mapper added

* commit 'd89dbfb0':
  enable passing tests

* commit '59115ab9':
  fix some more error messages
  pass along callObj in CastBuilder
  fix error handling in make.unique
  fix various error messages
  deprecate and remove calls to Predef.scalarXxx functions
  support diverting stderr in sink
  various small cleanups

Merge pull request #192 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:bugfix/reduce_nof_specialzations to master

* commit '3958eda1':
  reduce the number of specializations in Seq and MatMult builtins

Merge pull request #277 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/dim_update_perf to master

* commit '675b2369':
  more efficient UpdateDim implementation

Merge pull request #272 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/cast_pipelines3 to master

* commit '02bfdb76':
  MatchFun, NormalizePath: converted to cast pipeline
  Merge: converted to cast pipelines + few tests (one failing - ignored)
  Ls: converted to cast pipelines + new tests
  LocaleFunctions: converted to cast pipelines

* commit '0d19b830':
  Crossword and CumXXX builtins refactored using CP

* commit '155f7c42':
  TestRecommendedPackages started failing due to the new implementation of the All builtin that newly produces some warnings. This commit fixes that problem by adding Ignored.OutputFormatting trait in the respective test assertion.
  logical naRm arguments in Quantifier changed to boolean ones
  Builtins Any and All re-implemented using CP

* commit 'aecc38e0':
  Gamma and bitwise builtins refactored using CP
  The sampler for anyValue added
  The anyValue filter introduced

Merge pull request #275 in G/fastr from ~ADAM.WELC_ORACLE.COM/fastr:feature/builtins_sprint to master

* commit '0d79c396':
  Further finessed parameter casts for readDCF builtin.
  Similarly to type-specific vector conversion, asVector can now be used in the initial phase.