C strings library (extended+updated)

[Richard O'Keefe]

Standards, N: the principles we use to reject other people's code.

I've just posted a revised version of my strings package to
net.sources.  It includes the mem* functions, my own versions
of the strx* functions (they're not quite the same as the
ones that we didn't get, they're more like the standard functions),
new functions to reverse things, some macros for converting between
signed and unsigned characters, and Vax assembly versions for some
functions that previously lacked them.