(random, srandom) [_WIN32]: Provide random and srandom

POSIX equivalents instead of using the WIN32 rand/srand functions.
The files were derived from GNU libc source.

(empth_threadMain) [_WIN32]: Remove the srandom() as the
POSIX equivalent are not thread specific as the WIN32 functions were.

src/lib/w32/random.h

@@ -0,0 +1,41 @@
+#include <io.h>
+
+typedef int int32_t;
+//#define int32_t int
+#define NULL    ((void *)0)
+struct random_data
+{
+    int32_t *fptr;		/* Front pointer.  */
+    int32_t *rptr;		/* Rear pointer.  */
+    int32_t *state;		/* Array of state values.  */
+    int rand_type;		/* Type of random number generator.  */
+    int rand_deg;		/* Degree of random number generator.  */
+    int rand_sep;		/* Distance between front and rear.  */
+    int32_t *end_ptr;		/* Pointer behind state table.  */
+};
+
+/*
+ * Not required as the empire scheduler ensure only
+ * one thread is active at a time
+ */
+#define __libc_lock_lock(lock)
+#define __libc_lock_unlock(lock)
+#define __libc_lock_define_initialized(static1, lock)
+
+#define __set_errno(error) _set_errno((error))
+
+#define weak_alias(arg1, arg2)
+#define srandom_r(seed, buf) __srandom_r((seed), (buf))
+#define random_r(buf, result) __random_r((buf), (result))
+#define initstate_r(seed, state, size, buf) \
+    __initstate_r((seed), (state), (size), (buf))
+#define setstate_r(state, buf) __setstate_r((state), (buf))
+
+extern int __random_r (struct random_data *__restrict __buf,
+		     int32_t *__restrict __result);
+extern int __srandom_r (unsigned int __seed, struct random_data *__buf);
+extern int __initstate_r (unsigned int __seed, char *__restrict __statebuf,
+			size_t __statelen,
+			struct random_data *__restrict __buf);
+extern int __setstate_r (char *__restrict __statebuf,
+		       struct random_data *__restrict __buf);