[facter/f15] (4 commits) ...Update to 1.6.6

[Todd Zullinger]

Summary of changes:

  4bf6c00... Disable useless debuginfo generation (#795106, thanks to Vi (*)
  93f8b33... Update summary and description (*)
  bdbe815... Remove INSTALL from %doc (*)
  7f8ab51... Update to 1.6.6 (*)

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