git-svn-id: https://svn.code.sf.net/p/squirrelmail/code/trunk/squirrelmail@9731
7612ce4b-ef26-0410-bec9-
ea0150e637f0
If TZ variable can't be modified (php is running is safe mode and variable
is not listed in php safe_mode_allowed_env_vars), user's time zone options are
-not visible and interface use default webserver's time zone.
+not visible and interface uses default webserver's time zone.
List of available time zones is stored in locale/timezones.cfg. Current list
of time zones uses some time zone names that depend on webserver's system