Vendor import of tzcode2010n:

• Makefile Change LOCALTIME default from "Factory" to "GMT"; do not compile "factory" file (but keep it in the distribution).
• Theory Remove reference to "Factory" zone.
• localtime.c Initialize ttinfo structures filled by tzparse (thanks to Ravindra for reporting a valgrind warning).
• zic.c Fix generation of POSIX strings for zones with rules using "weekday<=n" forms of dates (thanks to Lei Liu for finding the problem). Also, limit output for non-POSIX-specificable zones defined to follow the same rules every year. (Note that no zones of either of the above types appear in the distribution; these changes cater to add-on zones).

Obtained from: ftp://elsie.nci.nih.gov/pub/