Log Message:
Use unsetenv(3) instead of putenv(3) to clear the 'TZ' variable from the
environment (affects the libical library).  The later does not really remove
it under NetBSD (only leaves it blank), thus making programs get the wrong
timezone (always UTC).

This problem exposes, for example, in the GNOME Clock applet.  The time is
fine until you open the calendar (clicking on the applet).  After that, the
clock is converted to UTC and there is no way to reverse it, other than
killing the running process (i.e., starting over with a clean environment).

Bump PKGREVISION to 2.