The perl in 4.1 is not 100% stock, and the one in 4.2 will be slightly farther from that.
We have a few minor fixes and adaptations that are not in 5.8.8: - handling of E<copy> in various pod converters - path lookup to handle /usr/local along /usr and possibly a few others I'm not too familiar with... and we are starting to make use of basic OpenBSD libc code (crypto hashes and mkstemp) in XS code that will yield the same interface as the CPAN perl module.
