Merge pull request #35 from bdrumheller/working

sign extension + overflow fix
Finished implementation of output file and ifxed return statements in branching
Merge pull request #36 from tassiahmed/working

Finished implementation of output file and ifxed return statements in br...
Fixed up implem. of output file
Merge pull request #37 from tassiahmed/working

Fixed up implem. of output file
Condensation and bug fixes
Merge pull request #38 from tassiahmed/working

Condensation and bug fixes
implemented sra fixed make file no warnings