With this change, we'll drop the "with $FreeBSD$" lines from trusted/
certs in the next update. untrusted/ will need to be done manually, but
I'll likely just do them all manually, commit, then run the script and
commit any legitimate updates after confirming the output matches what
I did manually.
Reported by: imp
Consider the possibility that PAGE_SIZE is greater than BBSIZE. (We still barely support one architecture, sparc64, where they are equal.) I think that howmany(BBSIZE, PAGE_SIZE) will "do the right thing."