Clean up date and timezone handling.
We used to pass changelog dates around as a "unixtime timezone" string
containing a pair of encoded ints. Now, they get passed around as a
(unixtime, timezone) tuple of numbers, which makes much more sense.
#!/bin/shmkdir tcd thg initecho a > ahg add ahg commit -m test -d "0 0"hg historyhg manifesthg cat ahg verify