Log Message:
lang/ghc98: Replace bootkits with GHC 9.8.2

NFCI where they work. The resulting compiler produces the same binary as
before so recursive revbump is not required. This is actually a rework of
my previous changes that I had to revert.

Replacing them with 9.8.x is necessary for the upcoming GHC 9.10. I'm going
to import lang/ghc910, update every Haskell package in pkgsrc, then switch
the default compiler after that.

As a bonus this also contains a fix for one of the long-standing issues on
Darwin: GHC was failing to build any Haskell packages that contain C++
code. This affected security/hs-digest and therefore Pandoc too.

Note that GHC 9.8.2 is going to be the last version that supports
FreeBSD/i386. The upstream has apparently stopped caring about i386
platforms and I'm already seeing several signs of it bitrotting away. In
fact ghci, the REPL for GHC, has already stopped working for years, because
it immediately segfaults by exhausting the ridiculously small stack space
of i386. But I have received zero complaints so far which probably means we
can just let it go.