Python: update pip and distribute

Closes #18358.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
clozure-cl 1.9

Closes #18351.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
sshpass: add to blacklist.

We keep rejecting this again and again.

See discussion in #9577, #12941, #13855.

Closes #18332.
audit: correct inverted has_trailing_newline condition

has_trailing_newline? checked if formula did not have a trailing
newline. Invert regex and invert audit check.

Closes #18359.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Index pkgconfig directories by MacOS.version
Exclude global pkgconfig dirs under superenv