The ReplacementBlockNode executes RHS and the target and
then executes ReplacementNode, which can specialize on
target value. In the default case ReplacementNode creates
nodes that handle replacement in the same way as before:
SpecialReplacementNode and GenericReplacementNode.

Replacements are broken down to individual calls lazily on first execution.
This is done by new ReplacementBlockNode, which executes RHS store to tmp
variable then the actual replacement and then it returns the RHS value.

ReplacementBlockNode creates the node for actual replacement depending on the
replacement structure: if all the calls are specials, it creates
ReplacementNodeSpecial, which takes advantage of the properties of specials.
Otherwise it creates regular replacement node that executes exactly the same
function calls as GnuR would.

Merge pull request #446 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/fixes-for-jvmtrend2 to master

* commit 'b21c05cd':
  Removed flag forNextMethod from argument matching
  Tests for NextMethod argument matching
  Covcor converted to cast pipelines + tests
  Varargs related methods moved from ArgumentsSignature to new class VarArgsHelper

The flag seems to be not needed anymore since we now do the argument matching
for NextMethod in more generic way.

* commit 'a073465a':
  suppress jdk_tools.jar in fastr-release

Merge pull request #447 in G/fastr from ~MICK.JORDAN_ORACLE.COM/fastr:remove_rconnection_type to master

* commit '91a7cb57':
  AsCharacterFactor: handle change to InheritsNode
  remove the special handling of RConnection

* commit '41f79d8c':
  fix install of recommended packages on clean build

* commit 'd415f905':
  changes for R-3.3.0 compatibility

Merge pull request #435 in G/fastr from ~MICK.JORDAN_ORACLE.COM/fastr:feature/add-recommended to master

* commit '1f30a30b':
  build/install recommended packages if FASTR_RELEASE is set; discover R version dynamically

Merge pull request #445 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:bugfix/revert_constantnode to master

* commit 'c9f38cfc':
  fix the TruffleObject-related assertion in ConstantNode

Merge pull request #444 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/fixes-for-jvmtrend to master

* commit '7a4dc92a':
  Argument matching for NextMethod target
  Covcor external: support arguments casting
  Remove redundant test in assert

* commit '9badee5c':
  terminate process if initial language initialization fails
  fix mkdtemp bug

NextMethod can have additional arguments, those are combined with the arguments
coming from the callsite of the S3 dispatch method. Additional arguments with
the same name override the callsite arguments, and unmatched arguments (i.e.
default values) of the caller of NextMethod are ignored.

* commit 'fa6b82c5':
  remove quotes on default values in Renviron files

* commit 'e10a0540':
  The cast pipeline in Quantifier (the base class of All and Any builtin) fixed

* commit '2acf4227':
  The 'maybe-incomplete' case implemented by a loop
  NonNANode supports RAbstractContainer. It uses the isComplete() method to determine whether the input argument is or is not an NA.

NonNANode supports RAbstractContainer. It uses the isComplete() method to determine whether the input argument is or is not an NA.

* commit 'd3221428':
  mx_fastr_pkgs: fix missing create of tmpdir

* commit '18352494':
  suite.py: arch spec is "solaris"