Reduced the possible relation operators
Merge branch 'newtac' of github.com:chamini2/sapphire into newtac

# By German Leon
# Via German Leon
* 'newtac' of github.com:chamini2/sapphire:
  Changes  to the MIPSGenerator. Fixing the store instruction generation
  Changes to MIPSGenerator. Fixing return statement
For works. Relational operators work, but could be better.