Obsolete and Removed POSIX Functions

[Joel Sherrill]

Hi

I am unsure how methods noted by POSIX as obsolete should
be guarded.

http://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_xsh_chap01.html

For example, asctime() and asctime_r() were marked as obsolescent
in Issue 7.

Similarly, that page lists some methods that should be removed.
I am assuming it is OK to still support them but what should the
guards be?

Just curious as we tighten things up.

--joel