called for the first time

* commit 'eb095852':
  removed bogus backslash in .gitignore
  fixed some problems in NumericalFunctions.Sign: - wrong handling of logical values - wrong error msg for non-numeric arguments

- wrong handling of logical values
- wrong error msg for non-numeric arguments

Merge pull request #519 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/stats-refactoring to master

* commit 'b2f6d6d8':
  Stats package refactoring: move stuff from StatsUtil to RMath, DPQ and MathConstants

* commit 'e06f8dbc':
  replaced instanceof(...) with Predef.rawValue()
  changed parameter type to RAbstractRawVector
  generated expected output messages
  rawToBits buildin implementation

* commit '6b07d85b':
  rffi: C, Call, Grid, Lapack, PCRE, RAppl, STats, Tools, UserRNG as Truffle Node; refactor ForeignFunctions to keep C/Fortran together
  rffi upcalls don’t over-constrain return type
  testrffi: create registered native symbols for functions; test calling via string or native symbol

Merge pull request #521 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/update-truffle to master

* commit '43f09bdf':
  Update Truffle version

Merge pull request #517 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/more-stats1 to master

* commit 'f56b9a47':
  Implement more externals from stats library

* commit '1a279978':
  Minor S4 fix.

rffi: C, Call, Grid, Lapack, PCRE, RAppl, STats, Tools, UserRNG as Truffle Node; refactor ForeignFunctions to keep C/Fortran together

* commit '4a47f493':
  toString related TruffleBoundary adds
  rffi: add interface for RFFI upcalls; refactor native layer to use instance not static class; add factory for alternate upcall implementations

* commit '601e9407':
  FastRTry: use Utils.stringFormat (TruffleBoundary)

rffi: add interface for RFFI upcalls; refactor native layer to use instance not static class; add factory for alternate upcall implementations

Merge pull request #510 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/all-rxxx to master

* commit '1931ad6c':
  Implement rmultinom
  Performance improvements
  Implement all remaining rxxx functions except for rmultinom

* commit 'dd6e957c':
  simplify CallRFFI.invokeCall signature and native info extraction in ForeignFunctions etc.
  forward dll info to CallRFFI/CRFFI

* commit 'd9ec63fd':
  Unnecessary profiles removed
  A couple of fix-ups in attribute related nodes

* commit '55510925':
  as.complex has internal generic dispatch
  Parser: hex float literals without decimal point (e.g. 0x0p0)

* commit 'e10337ce':
  pylint fix
  mx_fastr: add nativebuild command
  rffi: further cleanp
  ffi: route all upcalls through CallRFFIHelper