move rrrrrrread_tsc from libsys to libc so anyone can use it

include/minix/minlib.h

@@ -21,6 +21,10 @@ _PROTOTYPE(int rewrite_mtab, (char *_prog_name));
 _PROTOTYPE(int get_mtab_entry, (char *_s1, char *_s2, char *_s3, char *_s4));
 _PROTOTYPE(int put_mtab_entry, (char *_s1, char *_s2, char *_s3, char *_s4));
 
+/* read_tsc() and friends */
+_PROTOTYPE(void read_tsc, (u32_t *hi, u32_t *lo));
+_PROTOTYPE(void read_tsc_64, (u64_t *t));
+
 /* return values for fsversion */
 #define FSVERSION_MFS1	0x00001
 #define FSVERSION_MFS2	0x00002

include/minix/sysutil.h

@@ -87,9 +87,5 @@ struct util_timingdata {
 
 typedef struct util_timingdata util_timingdata_t;
 
-/* read_tsc() and friends. */
-_PROTOTYPE( void read_tsc_64, (u64_t *t)				);
-_PROTOTYPE( void read_tsc, (u32_t *hi, u32_t *lo)			);
-
 #endif /* _MINIX_SYSUTIL_H */
 

lib/libc/other/Makefile.inc

@@ -86,6 +86,8 @@ SRCS+=  \
 	putw.c \
 	pwcache.c \
 	random.c \
+	read_tsc.S \
+	read_tsc_64.c \
 	realpath.c \
 	rindex.c \
 	rlimit.c \

lib/libc/other/read_tsc_64.c

@@ -1,12 +1,11 @@
 
-#include "sysutil.h"
 #include <minix/u64.h>
-#include <minix/syslib.h>
+#include <minix/minlib.h>
 
 /* Utility function to work directly with u64_t
  * By Antonio Mancina
  */
-PUBLIC void read_tsc_64(t)
+void read_tsc_64(t)
 u64_t* t;
 {
     u32_t lo, hi;

lib/libsys/Makefile

@@ -112,8 +112,6 @@ SRCS=  \
 	env_prefix.c \
 	fkey_ctl.c \
 	tsc_util.c \
-	read_tsc.S \
-	read_tsc_64.c \
 	ser_putc.c \
 	stacktrace.c \
 	sys_hz.c \