[qt/f18] (11 commits) ...backport: fix security flaw was found in the way QSharedMemory class, CVE-2013-0254

[Than Ngo]

Summary of changes:

  8dbbe2f... add qtchooser support (disabled by default) (*)
  3ebc9a9... move rcc,pixeltool into %%files conditional too (*)
  f9755f3... cleanup dir creation/ownership (*)
  d20387e... move qdbusviewer inside conditional too (*)
  fab5de5... fix qtchooser logic error (*)
  01e166b... Rebuild due to "jpeg8-ABI" feature drop (*)
  3620500... make qtchooser support non-conflicting (*)
  fe43d9b... enable qtchooser support (*)
  0b15e71... Revert "enable qtchooser support" (*)
  bdf697b... rebuild (icu) (*)
  f24f81b... backport: fix security flaw was found in the way QSharedMem (*)

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