Complex and double numbers can be converted to String via static methods in Complex/DoubleVectorPrinter

* commit '0dda29ae':
  avoid capturing URLs that reference src locations for internal R code

* commit '8f4a5799': (22 commits)
  Unit tests for cast pipelines builder + small fixes to have consistent semantics
  Updated the javadoc of the arg method in CastBuilder
  test output file re-generated
  trailing spaces removed
  Chimney-sweeping adapted to processing all builtins in batch
  rbdiag supports two levels of matching the outputs produced by FastR and GnuR
  rbdiag can use RMissing and RNull values as the only samples
  CastPipeline: bypassing strings + few fixes
  CastBuilder documentation
  Implemented optimizations using the new intermediate representation.
  CastBuilder refactoring: inner classes moved to separate package
  CastBuilder: removed old API and replaced with equivalent expressed in new API
  Fix compilation errors
  Cast pipelines diagnostics re-implemented using CP-IR
  passing tests after CP-IR refactoring
  A major CP refactoring using an intermediate representation (CP-IR)
  Intermediate representation of the cast pipeline
  Fix: Bool -> Boolean
  Initial structure of intermediate representation of cast pipeline and its conversion to CastNodes.
  BypassNode can bypass some atomic types
  ...

Merge pull request #341 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/expression_as_vector to master

* commit 'dfdf953b':
  make RVector generic with array type
  RExpression extends RVector (instead of wrapping an RList)

Merge pull request #367 in G/fastr from ~ADAM.WELC_ORACLE.COM/fastr:feature/various_updates to master

* commit 'd2c4473c':
  Support for updating language objects on the native side.
  Handling both types of call nodes when creating a call.

Merge pull request #366 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/update_truffle to master

* commit 'f9a82d97':
  update Truffle version

* commit 'c15d2151':
  checkstyle fix
  generalize/localize addition of PolyglotEngine symbols in unit tests
  purge non-maven URLs in suite.py
  update JNR versions

Merge pull request #357 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:cleanup/trigexpfunctionnode to master

* commit 'b2c1ac8e':
  remove unused TrigExpFunctions.TrigExpFunctionNode/AdapterCall1

Merge pull request #365 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/update_jdk to master

* commit '8c7a9e64':
  update jdk

* commit '8dfad1cc':
  pkgtest: fix url field in --list.versions, add list-canonical for CRAN

Merge pull request #362 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/rsyntaxelement_serialization to master

* commit '9a827684':
  imlpement serialization on RSyntaxElement

Merge pull request #359 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/special_calls to master

* commit '2cca7f88':
  move infix functions to separate package, add special call paths
  add "special" hooks for frequently used primitive functions

Merge pull request #361 in G/fastr from ~MICK.JORDAN_ORACLE.COM/fastr:feature/clean-user-rng to master

* commit 'd376a237':
  cleanup of UserRNG; convert UserRngRFFI to JNI

Merge pull request #360 in G/fastr from ~MICK.JORDAN_ORACLE.COM/fastr:feature/update-jnr-versions to master

* commit 'f468cbb2':
  update JNR versions; remove all lafo urls

Merge pull request #358 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/various_fixes to master

* commit '1af36d25':
  small improvements in ArgState handling
  proper type profiling in IntersectFastPath
  do not clear slots in TemporarySlotNode