Doesn't matter much since C++ ABI used by GCC doesn't mangle variable
names;  however technically is required by Section 7.5 of the C++ spec.
Discussed with/OK guenther@, matthew@.

feedback & ok guenther@, matthew@

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.
OK deraadt@

entire trees for testing anyway, I might as well do this intrusive touching
of include files now.  Added openBSD tags.

Add cpio.h, tar.h, and re_comp.h headers for POSIX & XPG4 conformance