all.equal() for environments and refClasses [safer version of r66496]

git-svn-id: https://svn.r-project.org/R/trunk@66566 00db46b3-68df-0310-9c12-caf00c1e9a41
fix as.environment(list())

git-svn-id: https://svn.r-project.org/R/trunk@66567 00db46b3-68df-0310-9c12-caf00c1e9a41
Refactored some code to make available for yte code interpreter.


git-svn-id: https://svn.r-project.org/R/trunk@66568 00db46b3-68df-0310-9c12-caf00c1e9a41