Merge r6157:

- add extra fields to ThreadOSState to make thread cancellation sort-of 
  work on AIX5

- add function VG_(count_runnable_threads)


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6288 a5019735-40e9-0310-863c-91ae7b9d1cf9
2 files changed