Due to commit da1222de2e30aabcae9d17bbfa10bbf0672338af, we can now use
fakechroot to completely run scriptlet pactests
Use "which" functionality so as not to REQUIRE it for all users
Signed-off-by: Aaron Griffin <aaronmgriffin@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>