Luke's changes broke Windows build

git-svn-id: https://svn.r-project.org/R/trunk@63435 00db46b3-68df-0310-9c12-caf00c1e9a41
Made Rf_protect and friends inline functions.


git-svn-id: https://svn.r-project.org/R/trunk@63436 00db46b3-68df-0310-9c12-caf00c1e9a41