libpng 1.6.15
libpng: update 1.6.15 bottle.
libpng: run test suite
ninja: 1.5.3

notable changes:
- the bootstrap.py script is being retired, `configure.py --bootstrap` now does
  what bootstrap.py used to do

release note:
- https://groups.google.com/forum/#!topic/ninja-build/PHgWwy4DL0c

Closes #34447.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
ninja: update 1.5.3 bottle.
clamav 0.98.5

Version bump, fixed head, new optional dependency, moves the
sysconf dir to a directory inside HOMEBREW_PREFIX/etc to make it a
little tidier, adds some caveats to explain clamav’s confusing error
messages on initial run. Adds a test.

Closes #34403.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
clamav: update 0.98.5 bottle.
wxpython: patch plot lib to work with newer numpy

Closes #34448.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
wxpython: update 3.0.1.1_1 bottle.
assimp: boost is a build dependency

Closes #34444.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
assimp: update 3.1.1 bottle.
Suppress output from `cd`

Closes #34246.
percona-server 5.6.21-70.1

Closes #34450.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
percona-server: update 5.6.21-70.1 bottle.
emscripten 1.27.0

Version bump.

Closes #34455.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
emscripten: update 1.27.0 bottle.
liboping 1.8.0

Closes #34365.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
liboping: update 1.8.0 bottle.
ucommon 6.2.2 (new formula)

It’s a useful secure library that does stuff; It has a pretty
complicated history, I’d drown the entire commit message if I tried to
explain what it does and why.

Closes #34437.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
ucommon: add 6.2.2 bottle.