libreswan security and enhancement update

[3.15-5.0.1]

• add libreswan-oracle.patch to detect Oracle Linux distro
  [3.15-5]
• Resolves: rhbz#1273719 libreswan FIPS test mistakenly looks for non-existent file hashes
  [3.15-4]
• Resolves: rhbz#1268775 libreswan should support strictcrlpolicy alias
• Resolves: rhbz#1268776 Pluto crashes after stop when I use floating ip address
• Resolves: rhbz#1268773 Pluto crashes on INITIATOR site during ‘service ipsec stop’
• Resolves: rhbz#1208022 libreswan ignores module blacklist rules
• Resolves: rhbz#1270673 ipsec does not work properly on loopback
  [3.15-2]
• Resolves: rhbz#1259208 CVE-2015-3240
• Merge rhel6 and rhel7 spec into one
• Be lenient for racoon padding behaviour
• Fix seedev option to /dev/random
• Some IKEv1 PAM methods always gave ‘Permission denied’
• Parser workarounds for differences in gcc/flex/bison on rhel6/rhel7
• Parser fix to allow specifying time without unit (openswan compat)
• Fix Labeled IPsec on rekeyed IPsec SA’s
• Workaround for wrong padding by racoon2
• Disable NSS HW GCM to workaround rhel6 xen builers bug