aspell: fix audit warning

Closes #19731.
sbcl 1.1.8

Closes #20236.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
ccrypt 1.10

 - remove unused configure switch
 - use fails_with

Closes #20213.
libzdb: remove unused configure switch
FormulaInstaller: split up big method
FormulaInstaller: fix "optional build-time dep" edge case

An "optional build-time dep" is unlikely, but possible, and I happen to
notice this wasn't handled correctly while digging around in the deps
code over the last few days.
latex2html 2012
latex2html: fix indents
terminal-notifier: Build from source

Patched to build without code signing because, obviously,
we don't have the developer's certificate.

Added HEAD. But please note, if built with --HEAD, you
also have to `brew test terminal-notifier --HEAD`.