Merge "Fixed improper size displaying in 'df' utility"

static void printsize(long long n)

{

    char unit = 'K';

    n /= 1024;

    if (n > 1024) {

    long long t;

    n *= 10;

    if (n > 1024*1024*10) {

        n /= 1024;

        unit = 'M';

    }

    if (n > 1024) {

    if (n > 1024*1024*10) {

        n /= 1024;

        unit = 'G';

    }

    printf("%4lld%c", n, unit);

    t = (n + 512) / 1024;

    printf("%4lld.%1lld%c", t/10, t%10, unit);

}

static void df(char *s, int always) {