Yes, Abu Salem should be given capital punishment. Central Government does not have any right to waive of the death penalty. Its prerogative of either President of India or the Courts of India. Even the President does not have right to restrict the life sentence upto 25 years and if the Courts in India award Abu Salem sentence of more than 25 years, even the President of India cannot help the Central Government.
But the bottom line is Abu Salem deserves CAPITAL PUNISHMENT atleast for the sake of hundreds of people who died in the Bombay bomb blast in 1993.