@jrtc27 rightly points out I should add makeman (and thus showconfig) support. I'll look into that in followup commits.

Fix typo

Ports also has RADIO, GROUP, and MULTI for different set types, but this is the one I want now.

Rebase on D41481

In D41457#944650, @jrtc27 wrote:

Though please note the .PATH GC'ing in the commit message

• Fix SYM_MAPS
• Remove unused .PATH

Use LIBC_SRCTOP relative paths

Use LIBC_SRCTOP relative path

I don't have a strong preference. I just think it's kind of lame to have a heirarchy but not really. That being said, .PARSEDIR is a bit weird in that you have to use it in a .foo or force an expansion immediately so maybe that argues for sticking with LIBC_SRCTOP.

This change and D41421 conflict.

It seems extremely late in the release to be doing a malloc update.

Seems unlikely it was used, but also harmless.

I did a brief double take the the _LIBCOMPATS diff and the -old- stuff being combined, but that's fine.

It might be wise to expand the commit message with a bit more explanation of what's going on.

I've merged this back through llvm13. I'll let the changes settle for a day and then merge to quarterly so CI can use them.

\o/

I suppose we might consider making this work for COMPAT_LIBCOMPAT=64 in CheriBSD, but it's probably not worth it and our stuff isn't upstream at this point.

I'm slightly unhappy about the loss of grep-ability, but this does seem to be the best solution given our explosion of LIBCOMPAT's downstream.