kernel security and bug fix update

[2.6.32-573.3.1]

• [md] Revert ‘dm: don’t schedule delayed run of the queue if nothing to do’ (Mike Snitzer) [1246095 1240767]
• [md] Revert ‘dm: only run the queue on completion if congested or no requests pending’ (Mike Snitzer) [1246095 1240767]
  [2.6.32-573.2.1]
• [net] udp: fix behavior of wrong checksums (Denys Vlasenko) [1240758 1240759] {CVE-2015-5364 CVE-2015-5366}
• [fs] vfs: Unhash and evict unused children dentries after rmdir (Lukas Czerner) [1243400 1241030]
• [fs] vfs: Prevent syncing frozen file system (Lukas Czerner) [1243404 1241791]
• [fs] vfs: Prevent freeing unlinked file to be indefinitely delayed (Lukas Czerner) [1243406 1236736]
• [fs] vmcore: continue vmcore initialization if PT_NOTE is found empty (Baoquan He) [1245195 1236437]
• [fs] vmcore: prevent PT_NOTE p_memsz overflow during header update (Baoquan He) [1245195 1236437]
• [kernel] audit/fix non-modular users of module_init in core code (Baoquan He) [1245195 1236437]