PR classpath/23863:
* native/fdlibm/dtoa.c (_dtoa): Free contents of _Jv_reent when
finished.
* native/fdlibm/mprec.c: New version from newlib. Commented out
some includes. Added <assert.h>.
(_reent, _Bigint): New defines.
(_REENT_CHECK_MP, _REENT_MP_FREELIST, _REENT_MP_P5S): Likewise.
(__ULong, __Long): New types.
(_calloc_r): New function.
(Balloc): Dynamically add new _freelist entries as needed.
* native/fdlibm/mprec.h (struct _Jv_Bigint): Don't use
MAX_BIGNUMS to size _x[].
(struct _Jv_reent): _freelist now a _Jv_Bigint**. Removed
_allocation_map, num. Added _max_k.
From-SVN: r114511
