* libc/machine/spu/impure.c: Add missing underscore to impure_data.
* libc/machine/spu/impure.c: New file, supply a non-static _impure_data. * libc/machine/spu/Makefile.am: Add new file impure.c. * libc/machine/spu/Makefile.in: Regenerate. * libc/machine/spu/sys/errno.h: Define errno to be _reent_data._errno.