For example pattern "vector[some.permutation.of.indices] <- vector" which is used in lm.fit

Merge pull request #119 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/update_truffle to master

* commit '0312d5e6':
  enable passing test (error message)
  update Truffle dependency

* commit 'dfca6c69':
  fix regexpr/gregexpr bug then fixed=FALSE

* commit '6481b47f':
  Fixed a problem with negation of complex numbers.

* commit 'ddca2be4':
  Add methods for generic benchmark support

* commit 'bb30b492':
  Fixes related to making EagerPromise a final class again.
  Modified option controlling inline caching for promises to allow specifying cache size.
  The EagerPromise class made final again
  Enforce guarantee that if no eager promise evaluation optimizations are used then no eager promises are created.
  A change to enable option-controlled cache-less evaluation of promises.
  Fixed a problem with evaluation of default promises.
  Made a "promised" promise a subclass of "eager" promise to enable "promised" promise stats.

* commit 'd476b262':
  pylint fix
  Changes for mx 5.30; remove redundant bm code
  revert to mx 5.28
  remove NMethodSize arg; backwards compatible with mx 5.28
  Fix changed compiler option
  Fix changed compiler option
  update required mx version
  adapt to junit_harness signature change
  handle --jdk unit arg in junit_harness
  update MX version

Merge pull request #110 in G/fastr from ~STEPAN.SINDELAR_ORACLE.COM/fastr:feature/formulae to master

* commit '836521f8':
  Regenerated ExpectedTestOutput
  Fix: printing attribute values with prefix
  Fix: isFormula checks the whole 'class' vector
  Implementation of modelmatrix and modelframe
  RInternalCodeBuiltinNode - allows to implement R external in R code.

Merge pull request #114 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:bugfix/boxing_comparisons to master

* commit '039ecbe3':
  more careful comparisons on boxing objects

Merge pull request #113 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/store_logs to master

* commit '2a4ed929':
  store logs via ci.hocon instead of outputting to the console

Merge pull request #112 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:bugfix/assign_parens to master

* commit '8af36d1d':
  deparse fix (parens for assignments)

Merge pull request #108 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:bugfix/various_cleanups to master

* commit 'a423a2c0':
  various cleanups (unnecessary calls, missing profiles)

When attribute value is a list, it is printed with
prefix, which is the name of the attribute. + test case