[clementine/f20] (5 commits) ...restore parallel builds

[Rex Dieter]

Summary of changes:

  58497ff... - clementine - excessive debug output (#1001595) (*)
  186bf8e... drop Requires: libtaginfo (not needed or used afaict) (*)
  b9d201d... - drop Requires: libprojectM, qtsingleapplication (*)
  a9376fc... allow bundled gmock(1.5), not compat with 1.6 (*)
  3fac02a... restore parallel builds (*)

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