rust-cpython: drop manual management of mutably_borrowed
RefCell::borrow() should guarantee there's no mutable borrow.
As a follow up, maybe PySharedState can be a pure data structure + function.
Most ref-sharing business has already been moved to PySharedRef* and PyLeaked*.
#!/bin/sh
# This scripts is used to install dependencies for
# testing Mercurial. Mainly used by Vagrant (see
# Vagrantfile for details).
export DEBIAN_FRONTEND=noninteractive
apt-get update
apt-get install -y -q python-dev unzip
# run-tests.sh is added by Vagrantfile
chmod +x run-tests.sh