Prototypes also added for initstate() and setstate() but they
were not implemented in the shared newlib code.
* newlib/libc/include/cygwin/stdlib.h: Prototypes added.
* winsup/cygwin/include/cygwin/stdlib.h: Prototypes removed.
* newlib/libc/stdlib/random.c: New file.
* newlib/libc/machine/epiphany/machine/stdlib.h: Removed
* newlib/libc/stdlib/Makefile.am: Added random.c.
* newlib/libc/stdlib/stdlib.tex: Added random.def.
* newlib/libc/stdlib/Makefile.in: Regenerated.
Joel Sherrill