Changes: add some checks to MCalendar::setSystemTimeZone()
Changes: add some checks to MCalendar::setSystemTimeZone()

RevBy: Miroslav Safr

Details:

We want to know when this method fails. At least we should
see some debug messages then.

nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch