illumos gate

In addition to running the new tests, I also ran the libc symbol visibility tests to confirm that the new functions and macros are only visible when they should be (i.e. when no standards are selected)

I wrote a test program to convert from timespec to timeval and back again using the new macros, and to print the values at each step:

% ./utimes
TS ... atime: 1280793678.123456789
   ... mtime: 1492732800.000000017
TV ... atime: 1280793678.000123456
   ... mtime: 1492732800.000000000
TS ... atime: 1280793678.123456000
   ... mtime: 1492732800.000000000

TS ... atime: 1320796855.000000009
   ... mtime: 1498953611.987654321
TV ... atime: 1320796855.000000000
   ... mtime: 1498953611.000987654
TS ... atime: 1320796855.000000000
   ... mtime: 1498953611.987654000

The expected loss of precision and subsequent multiplication can be seen in the output. Here's the test program fragment

        printf("TS ... atime: %ld.%.9ld\n   ... mtime: %ld.%.9ld\n",
            atim->tv_sec, atim->tv_nsec, mtim->tv_sec, mtim->tv_nsec);

        TIMESPEC_TO_TIMEVAL(&tv[0], atim);
        TIMESPEC_TO_TIMEVAL(&tv[1], mtim);

        printf("TV ... atime: %ld.%.9ld\n   ... mtime: %ld.%.9ld\n",
            tv[0].tv_sec, tv[0].tv_usec, tv[1].tv_sec, tv[1].tv_usec);

        TIMEVAL_TO_TIMESPEC(&tv[0], atim);
        TIMEVAL_TO_TIMESPEC(&tv[1], mtim);

        printf("TS ... atime: %ld.%.9ld\n   ... mtime: %ld.%.9ld\n",
            atim->tv_sec, atim->tv_nsec, mtim->tv_sec, mtim->tv_nsec);

        printf("\n");