MFC r258086:

MFC r258086:
  Strip the -pN patch level from the VERSION string which gets encoded into
  CTF data.  Otherwise FreeBSD Update builds think every kernel file has
  changed every time there's a security advisory, since the FreeBSD Update
  build code isn't smart enough to look inside CTF data to ignore those
  changes.

Approved by:	re (gjb)

git-svn-id: svn://svn.freebsd.org/base/stable/10@258536 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f