google-app-engine: add _php_runtime.py binary

Closes #20040.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
nimrod 0.9.2

Closes #20038.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
doctor: extract helper from stray file checks
doctor: simplify trailing slash checks
doctor: reorganize check_for_macgpg2
Directory, not folder
Remove default_formula from MPIDependency.

Closes #19966.