Clean up the NAME section.

The entries in the NAME section of these man pages have man pages of their
own, so it doesn't make sense to have their names here, instead they
should be just described in the body (similar to what we do in math(3) man page).

This also helps whatis(1) and apropos(1), as otherwise you would see multiple
results with the same name in the output, while there is actually only one page
with that name.

Good example is:

$ apropos -n 2 -M realloc
realloc (3) general memory allocation operations
realloc (3) general purpose memory allocation functions

The first line is there because memory(3) man page had realloc in its
NAME section. This commit will fix this issue.

ok wiz@

Note memoryallocators(9) in this perhaps too generally named page.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Use
.In header.h
instead of
.Fd #include \*[Lt]header.h\*[Gt]
Much easier to read and write, and supported by groff for ages.
Okayed by ross.

Generate <>& symbolically.

Sort SEE ALSO and remove trailing comma.

branches: 1.6.12;
Last of the .Os cleanups. .Os is defined in the tmac.doc-common file,
so we shouldn't override it with versions in the manpages. Wheee!

add LIBRARY section to man page

update to lite-2

New-style RCS ids.

Add RCS indentifiers.

branches: 1.1.1;
Initial revision