requirements: don't print out java_home.
install: search when formula isn't found.

If you do `brew install blah` it currently doesn't search for it. This
seems to be unintentional looking at this code as the exception thrown
by ARGV.formulae.each is not caught and handled. Instead, let's handle
this case and provide a little more usability around our taps.

Closes #31761.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
net-snmp: note stable failure on 10.9.

Closes #31759.
alpine-chappa: update 2.11_1 bottle.
bind: update 9.10.0-P2_1 bottle.
cadaver: update 0.23.3_1 bottle.
curl: update 7.37.1_1 bottle.
dovecot: update 2.2.13_1 bottle.
elinks: update 0.11.7_2 bottle.
erlang: update 17.1_1 bottle.
freeradius-server: update 2.2.5_1 bottle.
freetds: update 0.91_1 bottle.
imapfilter: update 2.5.6_1 bottle.
ircd-hybrid: update 8.1.18_1 bottle.
irssi: update 0.8.16_1 bottle.
john-jumbo: update 1.7.9_1 bottle.
knot: update 1.4.7_1 bottle.
ldns: update 1.6.17_1 bottle.
lftp: update 4.5.4_1 bottle.
libcouchbase: update 2.4.0_1 bottle.