Use Keg#uninstall to clean up kegs
httpie 0.8.0 (new formula)

HTTPie (pronounced aych-tee-tee-pie) is a command line HTTP client. Its
goal is to make CLI interaction with web services as human-friendly as
possible.
httpie: add 0.8.0 bottle.

Closes #30353.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
rabbitmq 3.3.4

Fixes a blocker issue that prevented RabbitMQ from starting up on OS X.
rabbitmq: update 3.3.4 bottle.

Closes #30410.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
xmlformat: use perl version

Since Ruby 2 the ruby version issues many syntax warnings and OSX ships also
with Ruby >2. Fortunately there is a Perl version on the same archive that
does exactly the same thing. OSX ships with Perl 5, so we're fine.

Closes #30411.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
yarp: default to building shared libraries.