css-crush: add test

Closes #26533.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
pstree: add test

Closes #26534.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
chuck: fix build on 10.9

Fixes #26519.
pyqt: Updated formula with Python 3 support

Closes #26510.

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