Minor cleanups:

* remove 'extern' in all the headers, as that is irrelevant and wastes
  horizontal space

* fix some 64-bit uncleanness in client(-defined) block handling

* remove unneeded #includes



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@7987 a5019735-40e9-0310-863c-91ae7b9d1cf9
3 files changed