MFC r233611:

MFC r233611:
- Support inlined location in calltree output.
  In case of multiple level of inlining all the locations are flattened.
  Require recent binutils/addr2line (head works or binutils from ports
  with the right $PATH order).
- Multiple fixes in the calltree output (recursion case, ...)
- Fix the calltree top view that previously hide some shared nodes.

Tested with Kcachegrind(kdesdk4)/qcachegrind(head).

Sponsored by: NETASQ

git-svn-id: svn://svn.freebsd.org/base/stable/9@235977 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f