add ocp files, it does not compile yet
fix a bug in antiquot lexing
fix a comment location bug with unitst
modular lex_string
simplify lex_string
token location check finished
tweak FToken.quot
tmp renaming:mac sucks
rename FToken => Ftoken
clean
rename some files
clean
mac sick trick
clean
merge token branch
simplify test
simplify token quot
merget token quot logic
cool refactoring