Install some AWS packages to libexec

To prevent conflicting service commands, install some AWS packages to libexec
and don't symlink in the service command.

Closes #16591.
Check if Cellar and Cache exist before cleaning.
brew test-bot: handle dependencies better.
postgresql: remove duplicate launchd info.
zbar: style nits
imagemagick 6.8.0-10
Add launchctl_instructions method

Closes #16604.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Hadoop: don't link rcc into bin

Closes #15501.
phash 0.9.5
Revert "Add launchctl_instructions method"

This code makes assumptions about the existence of prefix which are
valid in the context of the installer, but not necessarily in the
context of `brew info`, thus `brew info` on an outdated formula errors
out.

This reverts commit e5b53dd64b769b67805d1054d906f7083939d905.
InspIRCd 2.0.10

Closes #16608.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
libssh 0.5.3

Closes #16553.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
SHA1 trailing "/" is incorrect removed to fix hash mismatch error

Closes #16610.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
mu: needs newer autotools on all platforms
Proof General 4.1

Closes #14827.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
dmtx-utils 0.7.4

Closes #15940.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
jenkins 1.494
Mercurial 2.4.1

Closes #16621.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
transmission 2.75

Closes #16622.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
jack: fails_with :clang build 421

- The build number was missing.

Closes #16623.

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