identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will use those
names internally. Weak aliases are used to provide the original names
to the API.
This is only the first part of this change. It is most of the functions
which are implemented in C for all NetBSD ports. Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.
argument is a colon.
Updated the manpage to reflect the above change, and expanded the example to
the one used by the POSIX.2 rationale, as it more clearly explains how
the new behavior is to be used.
The manpage should be rewritten --- it is much more confusing than it
should be.
