check_memory - check all allocated blocks

string check_memory(int flag)

returns a string describing possible memory allocation problems.  If the
optional flag is 1, a summary of allocated memory is printed at the
end.

This efun is only available if PACKAGE_DEVELOP, DEBUGMALLOC, and
DEBUGMALLOC_EXTENSIONS are defined.

 Tim Hollebeek  Beek@ZorkMUD, Lima Bean, IdeaExchange, and elsewhere
