[ShellCheck/f20] (2 commits) ...proper fix to disable tests everywhere (#1158522)

[Jens Petersen]

Summary of changes:

  b4d116e... only enable tests on archs with ghci except armv7 (#1158522 (*)
  ba15a85... proper fix to disable tests everywhere (#1158522) (*)

(*) This commit already existed in another branch; no separate mail sent