Added a new pj_timer_entry_reset function that resets a timer_entry
for re-use.
Changed direct settings of timer_entry fields to use
pj_timer_entry_init and pj_timer_entry_reset.
Fixed issues where timers were being rescheduled incorrectly.
Change-Id: I5b624bfbc5c1429117484b9b24567293002148e6