code refactoring of maca_lexer and maca_tokenizer

maca_common/src/trie.c

maca_lexer/src/context.h

maca_lexer/src/extract_mwe_from_fplm.c

maca_lexer/src/maca_lexer.c

maca_tokenizer/CMakeLists.txt

maca_tokenizer/src/context.c

maca_tokenizer/src/context.h

maca_tokenizer/src/fr_tok_rules.l

maca_tokenizer/src/maca_tokenizer.c

perceptron/lib/include/cf_file.h

perceptron/lib/src/cf_file.c

perceptron/lib/src/perceptron.c