TO DO: Enable this in CMake-based builds.

------------------------------------------------------------
revno: 3474
revision-id: marko.makela@oracle.com-20100520104042-ma2nsscqdvwoph8k
parent: marko.makela@oracle.com-20100519081618-h38q02qxuvcowbtk
committer: Marko Mäkelä <marko.makela@oracle.com>
branch nick: 5.1-innodb
timestamp: Thu 2010-05-20 13:40:42 +0300
message:
  Bug#53593: Add some instrumentation to improve Valgrind sensitivity

  BUILD/*: Add valgrind_configs=--with-valgrind.
  BUILD/*: Remove -USAFEMALLOC from valgrind_flags.

  configure.in: Add AC_ARG_WITH(valgrind) and HAVE_VALGRIND.

  include/my_sys.h: Define a number of MEM_ wrappers for VALGRIND_ functions.
  include/my_sys.h: Make TRASH do MEM_UNDEFINED().

  include/m_string.h: Remove unused macro bzero_if_purify(A,B).

  _mymalloc(): Declare MEM_UNDEFINED() on the allocated memory.

  _myfree(): Declare MEM_NOACCESS() on the freed memory.

  storage/innobase/include/univ.i: Enable UNIV_DEBUG_VALGRIND based on
  HAVE_VALGRIND rather than HAVE_purify.

  Possible things to do:
   * In my_global.h, remove the defined(HAVE_purify) condition
     from the _WIN32 uint3korr().
   * In my_global.h *int*korr(), use | instead of +
     in order to keep the Valgrind V bits accurate
   * Consider replacing HAVE_purify with HAVE_VALGRIND
   * Use VALGRIND_CREATE_BLOCK, VALGRIND_DISCARD in mem_root and similar places