3a6f347641
This would allow interested parties to do experimental runs with an environment set appropriately to raise all the warnings throughout the build; e.g. env WARNS=6 NO_WERROR=yes buildworld. Not currently touching the numerous instances in ^/tools. MFC after: 1 week
$FreeBSD$ libopenbsd is a thin compatibility layer intended to allow a limited set of OpenBSD software to compile as part of the FreeBSD build with little or no modification. It is built as a static library and not installed for general use. Likewise, its header files are not installed.