Merge commit 'origin/master' into pr4225

Merge commit 'origin/master' into pr4225

* commit 'origin/master':
  Fix memory access error in nfs.proc.read_setup, nfs.proc.write_setup and nfs.proc.commit_setup
  Update NEWS regarding the systemtap client/server.
  New man page for the systemtap client/server and related utilities.
  Repopulate symbol/type info.
  Pushed quiesce logic down into the task_finder layer.
  Added bug 6841 fix utrace syscall test.
  PR6731: improve listing mode to list variables