Added missingOK argument to cmp function and update copyright date.


git-svn-id: https://svn.r-project.org/R/trunk@66709 00db46b3-68df-0310-9c12-caf00c1e9a41
Added new opcodes and adjusted some operand coutns and opcode names.


git-svn-id: https://svn.r-project.org/R/trunk@66710 00db46b3-68df-0310-9c12-caf00c1e9a41