- Reinstate the 'atfork' from 2.4.0, which was more powerful, and expose it to
  tools.
- Factor out 'execv' from 'system' and expose it to tools.

Partly based on a patch from Robert O'Callahan.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@8669 a5019735-40e9-0310-863c-91ae7b9d1cf9
7 files changed