[facter/f17] (4 commits) ...Preserve timestamps when installing files

[Todd Zullinger]

Summary of changes:

  37f8e75... Make spec file work for EPEL and Fedora (*)
  a900063... Drop BuildArch: noarch and make dmidecode/pciutils deps arc (*)
  e9d4214... Make ec2 facts work on CentOS again (#790849, thanks to Jer (*)
  d0469a4... Preserve timestamps when installing files (*)

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