illumos gate

Review at: https://illumos.org/rb/r/2346/

Using this small test program (based on one provided by Alexander Pyhalov)

#include <libzoneinfo.h>
#include <locale.h>
#include <stdio.h>

int main()
{
        struct tz_continent *ctnts = NULL;
        struct tz_continent *pctnt = NULL;
        struct tz_country *cntries;
        int nctnt, nctry, i;

        setlocale(LC_MESSAGES, "");
        nctnt = get_tz_continents(&ctnts);

        if (nctnt == -1) {
                printf("No continent data\n");
                return(0);
        }

        for (i = 1, pctnt = ctnts; pctnt != NULL;
            pctnt = pctnt->ctnt_next, i++) {
                nctry = get_tz_countries(&cntries, pctnt);
                printf("%s  - %d\n", pctnt->ctnt_name, nctry);
        }

        return 0;
}

Before - note the -1 for Europe

Africa  - 51
America  - 53
Antarctica  - 2
Arctic  - 1
Asia  - 50
Atlantic  - 9
Australia  - 1
Europe  - -1
Indian  - 11
Pacific  - 28

After:

Africa  - 51
America  - 53
Antarctica  - 2
Arctic  - 1
Asia  - 50
Atlantic  - 9
Australia  - 1
Europe  - 49
Indian  - 11
Pacific  - 28