Handle E and O for months and comma separate list of numbers for months and days.
Handle base-date + integer * day of week.  i.e. 2014/11/27+2Th for every other Thursday start 2014/11/27
Minor code cleanup
Handle count day of month, i.e.  third Thursday is */*/3Th,  every Thursday is */*/0Th
Merge branch 'prefix-s-trim-functions' into schedule-compiler-improvements