waf: Document the confusing --nonshared-binary, --builtin-libraries, --private-librar...

waf: Document the confusing --nonshared-binary, --builtin-libraries, --private-libraries and --bundled-libraries

These options are confusing to all who encounter them.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=8731

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Mar 28 10:06:01 UTC 2022 on sn-devel-184

(cherry picked from commit 14e7112734bbb31db99e394323ef2cb31385ebf7)