speex: rebottle with libogg
speex: update 1.2rc1 bottle.

Closes #32803.

Signed-off-by: Tim D. Smith <git@tim-smith.us>
mdp 0.91.2 (new formula)

mdp is "A command-line based markdown presentation tool." This program was
announced recently on Hacker News and has proved useful.
mdp: add 0.91.2 bottle.