removing setter for orderNumber for: The API should assign order numbers
to new orders - TRUNK-4163
Setting order numbers in the api needs to be safe in a clustered
environment - TRUNK-4183
TRUNK-4136 Added DrugOrder.route and removed DrugOrder.equivalentDailyDose properties
Merge remote-tracking branch 'upstream/1.10.x' into 4167

Conflicts:
	api/src/main/java/org/openmrs/DrugOrder.java
	api/src/main/resources/org/openmrs/api/db/hibernate/Order.hbm.xml
TRUNK-4167 | Using prepared statement in a loop to update drug_order units.
             Added precondition in changeset for adding dose_units column.