[kdelibs/f18] (8 commits) ...fix ghost devices in the udisks2 Solid backend

[Than Ngo]

Summary of changes:

  9d5428c... rebase udisks2 backend patch (*)
  61d8d48... fix file filter (*)
  601681b... fix typo (*)
  04893e4... Add cache for Solid devices to speed up KFilePlacesModel (*)
  c8f1a5d... update udisks2 backend patch (*)
  34d2c62... Minor fixes in udisks2 patch (*)
  8d3faf2... 4.9.4 (*)
  3966b2d... fix ghost devices in the udisks2 Solid backend (*)

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