[mingw-qt5-qtbase/f17] (3 commits) ...Make sure $RPM_BUILD_ROOT is used

[Erik van Pienbroek]

Summary of changes:

  eeee3e6... Make sure $RPM_BUILD_ROOT is used when creating folders (*)
  314fe20... Make sure $RPM_BUILD_ROOT is used when creating folders (*)
  d87f645... Make sure $RPM_BUILD_ROOT is used (*)

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