pga_next_schedule function bug

["Glen Sasek" <sasekg(at)gmail(dot)com>]

When creating a schedule or running the test code in pgagent.sql  the 
following occurs:
ERROR: syntax error at or near "IF"
CONTEXT: compile of PL/pgSQL function "pga_next_schedule" near line 161
PL/pgSQL function "pga_job_trigger" line 4 at select into variables
PL/pgSQL function "pga_schedule_trigger" line 10 at SQL statement

This can be fixed by editing the pga_next_schedule function around lines 
131-163; the problem is that there is no ELSEIF keyword in the language. The 
correct syntax is ELSIF.

Here's a corrected version of the block of code that is causing problems:
       -- Was the last day flag selected?
       IF nextday = 32 THEN
           IF nextmonth = 1 THEN
               nextday := 31;
           ELSIF nextmonth = 2 THEN
               IF pgagent.pga_is_leap_year(nextyear) = TRUE THEN
                   nextday := 29;
               ELSE
                   nextday := 28;
               END IF;
           ELSIF nextmonth = 3 THEN
               nextday := 31;
           ELSIF nextmonth = 4 THEN
               nextday := 30;
           ELSIF nextmonth = 5 THEN
               nextday := 31;
           ELSIF nextmonth = 6 THEN
               nextday := 30;
           ELSIF nextmonth = 7 THEN
               nextday := 31;
           ELSIF nextmonth = 8 THEN
               nextday := 31;
           ELSIF nextmonth = 9 THEN
               nextday := 30;
           ELSIF nextmonth = 10 THEN
               nextday := 31;
           ELSIF nextmonth = 11 THEN
               nextday := 30;
           ELSIF nextmonth = 12 THEN
               nextday := 31;
           ELSE
               --do nothing
           END IF;
       END IF;