Edit PATIENT (#2) file fields    ICR (4079)

To support the MPI Changes Project - Iteration One, selected identifying
fields in the PATIENT (#2) file must be asked before the query to the MPI
system.  This allows these fields to be available to be used in an enhanced
matching algorithm.

Therefore, Master Patient Index Vista requests permission to add the
following PATIENT (#2) file fields to the API that is currently called
from the various registration options where this functionality is needed.

The code added to routine ^MPIFAPI does the following.
1. check for variable MPIFS - if it exists, don't ask anything since
this is from the background job for SmartCard.
2. check for variable DGNEW
If $G(DGNEW)=1, this is registration of a new patient; only ask
for the following fields since NAME, DOB, SEX, SSN, MULTIPLE
BIRTH INDICATOR have just been asked.
MOTHER'S MAIDEN NAME
PLACE OF BIRTH [CITY]
PLACE OF BIRTH [STATE]
ALIAS
If DGNEW="" or doesn't exist, this is an existing patient; so
also ask/verify the following fields.
NAME
DATE OF BIRTH
SEX
SOCIAL SECURITY NUMBER
MULTIPLE BIRTH INDICATOR