redo test script, modify tests
Merge branch 'master' of https://github.com/albertcui/gawk into features
Merge branch 'master' of https://github.com/albertcui/gawk into features
added code_gen.ml
Merge branch 'features' of https://github.com/albertcui/gawk into features
Merge branch 'features' of https://github.com/albertcui/gawk into features
modify rejected tests, commit code_gen
print hello world
Merge branch 'master' of https://github.com/albertcui/gawk into features