private: Use safe_qx instead of qx()

Signed-off-by: Niels Thykier <niels@thykier.net>
private: Run perltidy

Signed-off-by: Niels Thykier <niels@thykier.net>
reporting: Avoid forking shell when invoking commands

Signed-off-by: Niels Thykier <niels@thykier.net>