8a9,25
> * 3.3.0 (January 23, 2013)
>
> This version includes a few minor performance improvements in addition to the
> listed new features and bug fixes.
>
> New features:
> - Add clipping support to lg_chunk option processing.
> - Add the --enable-ivsalloc option.
> - Add the --without-export option.
> - Add the --disable-zone-allocator option.
>
> Bug fixes:
> - Fix "arenas.extend" mallctl to output the number of arenas.
> - Fix chunk_recycyle() to unconditionally inform Valgrind that returned memory
> is undefined.
> - Fix build break on FreeBSD related to alloca.h.
>