Links in the main tzdb data files are now treated as zones with the exception of a few special cases Links in the 'backward' file are still treated as aliases
Since MonthDay.plus/minusDays is documented to assume February has 29 days, these test cases verifies that.
Updated MonthDay.plusDays Javadoc comment to mention that February is assumed to have 29 days for calculations that require wrapping past the end of February. Note that the Javadoc for MonthDay in the new Java 8 date API calls out this limitation as well, and explicitly chose not to support arithmetic on MonthDays for this reason: http://docs.oracle.com/javase/8/docs/api/java/time/MonthDay.html
…e list of included chronologies.