non-Reiser CPP

[VLD/VMB]

It should be pointed out that merely not conforming to K&R was not
the reason that macro replacement inside strings is being disallowed;
the real practical problem was that several independent compiler
developers used K&R as a guide, so their compilers don't allow
such replacement.  If all existing compilers had been one way or the
other, undoubtedly that way would have been adopted for the standard.
However, given a conflict like this, weight is given to what K&R said.