[mingw32-gtk2/f15] (4 commits) ...Update to 2.24.8

[epienbro]

Summary of changes:

  e0daf7b... Clean up the spec file for use with modern rpmbuild (*)
  fc79bbb... Update to 2.24.7 (*)
  00cd723... mingw-gtk2: BuildRequire packages needed for regenerating c (*)
  4dbd67a... Update to 2.24.8 (*)

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