- Add a new 'add-kld <kld>' command to locate a kld and load its symbols.
- If the quiet flag is specified, don't dump the unread portion of the
message buffer on startup.
- Remove the warnx() from kgdb_lookup() and add it in callers where a
failed lookup is warning worthy.
- Add a shared library backend for kernel files that treats klds as shared
libraries and auto-load symbols for klds on startup.
- Build a section table from the kernel file so that 'info files' output
looks sane.