Patch #734231: Update RiscOS support. In particular, correct
riscospath.extsep, and use os.extsep throughout.
diff --git a/Modules/timemodule.c b/Modules/timemodule.c
index 2e28d95..ce25281 100644
--- a/Modules/timemodule.c
+++ b/Modules/timemodule.c
@@ -78,6 +78,10 @@
 #include <kernel/OS.h>
 #endif
 
+#ifdef RISCOS
+extern int riscos_sleep(double);
+#endif
+
 /* Forward declarations */
 static int floatsleep(double);
 static double floattime(void);
@@ -944,7 +948,7 @@
 		return 0;
 	Py_BEGIN_ALLOW_THREADS
 	/* This sleep *CAN BE* interrupted. */
-	if ( sleep(secs) )
+	if ( riscos_sleep(secs) )
 		return -1;
 	Py_END_ALLOW_THREADS
 #elif defined(PLAN9)