* java/util/Calendar.java (set): Never recompute fields here. They
will already be set if someone set time explicitly, and it can cause
problems to do so. Don't invalidate AM_PM setting if HOUR is set.
* java/util/GregorianCalendar.java (computeTime): Don't ignore an
HOUR setting if AM_PM is set. Don't try to ensure the HOUR value is
sane.
* java/text/SimpleDateFormat.java (defaultCentury): New field.
(readObject): Call set2DigitYearStart if appropriate so that
defaultCentury is calculated.
(SimpleDateFormat): Don't bother clearing calendar here. Call
computeCenturyStart().
(set2DigitYearStart): Calculate and set defaultCentury.
(format): Don't clone the calendar. Use "calendar" not "theCalendar"
everywhere.
(parse): Likewise. If the pattern is "y" or "yy" and it found exactly
2 numeric digits, use the 80-20 heuristic to parse the value into a
default century based on defaultCenturyStart.
(computeCenturyStart): Rewritten. Call set2DigitYearStart().
From-SVN: r44395
fa397ddafb