Dictionary.com and wikipedia have this meaning for secular: "not pertaining to or connected with religion"
BJP says everyone should be treated the same irrespective of their religion
Congress/Communists say: If you religion is Islam you get more previlages.
Who is secular now?
NOTE: I am not sure if congress/communists show favoritism for religions other than Islam - might be in pockets where Christianity is a vote bank - but not sure.