* spu/jsre.h: Add JSRE_LSTAT.
* spu/lstat.c: New file add lstat support via an assist call.
* spu/conv_stat.c: New file, add common stat conversion code.
* spu/fstat.c: Use __conv_stat.
* spu/stat.c: Use __conv_stat.
* spu/Makefile.in: Add conv_stat.o and lstat.o.