We don't need a Pathname just to stat the directory
juju 1.20.10.

Closes #33268.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
juju: update 1.20.10 bottle.
pebble-sdk 2.7

Closes #33272.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
pebble-sdk: update 2.7 bottle.
valgrind: maxmacos dep

Hopefully this stops
[this](https://github.com/Homebrew/homebrew/issues/29988#issuecomment-59
435790) becoming a repetitive issue, given Valgrind’s slow update
schedule.

Closes #33251.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
zeromq: use libsodium by default for security.
zeromq: update 4.0.5 bottle.

Closes #33241.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
xcode: check clang exists to confim install.
Installation of OpenMP/Clang compiler as described on http://clang-omp.github.io/
- use version from tag - added test
rename clang to clang-omp
fixed test + audit
- using tarballs instead of git - checksums
clang-omp: add 1013141148 bottle.
juju: update 1.20.10 bottle.
valgrind: update 3.10.0 bottle.
zeromq: update 4.0.5 bottle.