[klibc] Allow greater precision with sleep

[Jeff Bailey]

With the ever growing struggle to keep boot times down, we needed the
ability to sleep for periods of less than one second.  Everyone seems to
have nanosleep, so it doesn't look like there's a problem just using the
syscall.

Thanks to Scott James Remnant <scott at ubuntu.com> for this patch.

--- klibc-1.1.1~/utils/sleep.c  2005-09-06 21:49:34.000000000 +0100
+++ klibc-1.1.1/utils/sleep.c   2005-11-22 07:35:24.903935592 +0000
@@ -1,19 +1,21 @@
 #include <stdio.h>
 #include <stdlib.h>

+#include <time.h>
+
 int main(int argc, char *argv[])
 {
-       unsigned long s;
+       struct timespec ts;
        char *p;

        if (argc != 2)
                goto err;

-       s = strtoul(argv[1], &p, 10);
+       p = strtotimespec(argv[1], &ts);
        if ( *p )
                goto err;

-       sleep(s);
+       nanosleep(&ts, NULL);

        return 0;



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