Modified constraints on queries to get the record with the maximum x_record_num based on a refined group by statement that returns unique records. This was done to eliminate duplicate records being retrieved.
Added the column dob_skew to the table tmp_patient. This value represents the difference, in days, between the actual birthdate and January 1 of the same year. This skew is then used to offset other event dates associated to a patient.
Merge branch 'master' of https://github.com/OSRData/usc-mini-dewars

Conflicts:
	database/source/prc_load_std.sql