Fix a type mismatch for "arenas.nlruns" mallctl access. This bug caused
a crash during statistics printing on 64-bit systems.
Fix the "stats.active" mallctl to include active memory in huge objects.
Report active bytes for the whole application, as well as per arena.
Remove several unused variables.
Replace chunk stats code that was missing locking; this fixes a race
condition that could corrupt chunk statistics.
Converting malloc_stats_print() to use mallctl*().
Add a missing semicolon in th DSS code.
Convert malloc_tcache_flush() to a mallctl.
Convert malloc_swap_enable() to a set of mallctl's.
Clean up whitespace.
Lock access of swap_avail when printing stats.
Use inttypes.h for portable printf() format specifiers, specifically for
uint64_t (PRIu64).
Change highchunks and curchunks stats from (unsigned long) to (size_t).
Fix a stats bug in large object curruns accounting.
Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM
error path.
Fix API name mangling to coexist with __attribute__((malloc)).
