added all check_op tests
Merge branch 'features' of https://github.com/albertcui/gawk into features
Merge branch 'master' of https://github.com/albertcui/gawk into features
fix bug about accepting tests
Merge branch 'features' of https://github.com/albertcui/gawk into features
Merge branch 'master' of https://github.com/albertcui/gawk into features
Merge branch 'master' of https://github.com/albertcui/gawk into features
Merge branch 'features' of https://github.com/albertcui/gawk into features
pulled in master changes
pulled in master
remove duplicate entries
Merge branch 'features' of https://github.com/albertcui/gawk into features
Merge branch 'master' of https://github.com/albertcui/gawk into features

Conflicts:
	code_gen.ml
pretty print for struct member assignment
fix and add parser unit tests
Front end for array assignment
Merge branch 'master' of https://github.com/albertcui/gawk into features

Conflicts:
	parser.mly
	scanner.mll
	test/bad_params_to_fn.k
	test/bad_params_to_fn_reject.k
	test/semantic_bad_params_to_fn_reject_rejectsem.k
	test/unit_outsideOfMethod.k
Merge branch 'features' of https://github.com/albertcui/gawk
made array assignment work, changes to semantic_checker