Merge pull request #128 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/cleanups to master

* commit 'c731a8e1':
  introduce and use createSharedXyzVectorFromScalar functions
  make usages of ROptions.getValue able to deal with scalar values
  makeSharedPermanent should return "this"
  populate ROptions with primitives instead of non-shared vectors
  enable passing tests
  move gpbits functions into RBaseObject
  decide printing of S4 objects similar to GNUR
  less output on ProcessFailedTests
  cleanups
  make "names" internal generic