Remove ucore_ prefix from headers and source files

src/iomux_impl.c

@@ -3,14 +3,14 @@
 #include <string.h>
 #include <assert.h>
 #include <ucore/iomux_impl.h>
-#include <ucore/ucore_clock.h>
+#include "ucore/clock.h"
 
 
 //dispatchers for the IOMux implementations */
 
 struct IOMux *iomux_create(enum IOMUX_TYPE type)
 {
-    return iomux_create_ex(type, &ucore_timeofday_clock);
+    return iomux_create_ex(type, &uc_timeofday_clock);
 }
 
 struct IOMux *iomux_create_ex(enum IOMUX_TYPE type, struct UCoreClock *uclock)