#7 More Fixes for Recur

[nlipke]

CR1: UNTIL equal to last day would not return the event
on UNTIL value
This was caused by the UNTIL parser checking for Date
before DateTime

CR2: Fixes for getAbsWeekDays(): now properly deals with:
* positive numbers return the correct day
* no number return all
* positive and negative numbers which do not exist
(e.g. 5TU in a month with only 4 Tuesdays, nothing will
be added)

CR3: Count returns too many days, when base is prior to
period start
Now starts counting from base.
When base is prior to period start the list will
contain less than count items.

[nlipke]

Logged In: YES
user_id=1318710

Fixed issue caused by rolling over the cal when start was
changed to base

[nlipke]

Updated patch