Set NEVERLVNULLSUBS correctly for VistA
Set NEVERLVNULLSUBS correctly for VistA

VistA doesn't allow null subscripts and uses null subscripts in $Order
commands where null subscripts can cause errors.

The gtm_lvnullsubs environment variable controls the behavior of null
subscripts. 2 is the value for NEVERLVNULLSUBS.

Documentation:
http://tinco.pair.com/bhaskar/gtm/doc/books/pg/UNIX_manual/ch06s27.html#ch6_lvnullsubs

OSEHRA/VistA,apexdatasolutions/VistA,shabiel/VistA,josephsnyder/VistA,shabiel/VistA,OSEHRA/VistA,OSEHRA-Sandbox/VistA,jasonli2000/VistA,timmvt/VistA_tt,apexdatasolutions/VistA,mdgeek/VistA-FHIR-CWF,shabiel/VistA,OSEHRA/VistA,OSEHRA-Sandbox/VistA,shabiel/VistA,mdgeek/VistA-FHIR-CWF,mdgeek/VistA-FHIR-CWF,OSEHRA-Sandbox/VistA,apexdatasolutions/VistA,timmvt/VistA_tt,josephsnyder/VistA,OSEHRA/VistA,timmvt/VistA_tt,josephsnyder/VistA,shabiel/VistA,OSEHRA-Sandbox/VistA,apexdatasolutions/VistA,josephsnyder/VistA,shabiel/VistA,jasonli2000/VistA,josephsnyder/VistA,mdgeek/VistA-FHIR-CWF,OSEHRA/VistA,mdgeek/VistA-FHIR-CWF,timmvt/VistA_tt,OSEHRA-Sandbox/VistA,jasonli2000/VistA,josephsnyder/VistA,timmvt/VistA_tt,mdgeek/VistA-FHIR-CWF,OSEHRA/VistA,apexdatasolutions/VistA,jasonli2000/VistA,OSEHRA-Sandbox/VistA