[OFBiz] Users - LoginServices.userLogin fails since Rev 5181(5178)

[Ashish Hareet]

Upated to Rev 5181 today & LoginServices.userLogin fails on run,
stating that password is incorrect.

Looking at the SVN logs, David has made some changes in Rev 5178 &
as per the text I'm able to get up & running by setting -
password.accept.encrypted.and.plain=true

The question is, how can I let the value to "false" for 
"password.accept.encrypted.and.plain" & yet run with the login
not failing. Which values & where, need to be changed(& how) to keep 
password.accept.encrypted.and.plain=false.

Appreciate your help
Ashish Hareet