added several tools to manipulate corpora in maca_corpora as well as conll2mcf

CMakeLists.txt

maca_common/CMakeLists.txt

maca_common/include/conll_lib.h

maca_common/include/hash_str.h

maca_common/src/conll_lib.c

maca_common/src/hash_str.c

maca_corpora/CMakeLists.txt

maca_corpora/exec/CMakeLists.txt

maca_corpora/exec/ftb2fr.c

maca_corpora/exec/ptb2en.c

maca_corpora/lib/CMakeLists.txt

maca_corpora/lib/include/ftb_lib.h

maca_corpora/lib/include/orfeo_lib.h

maca_corpora/lib/src/ftb_lib.c

maca_corpora/lib/src/orfeo_lib.c

maca_tools/CMakeLists.txt

maca_tools/src/conll2mcf.c

maca_tools/src/conllu2mcf.c

maca_trans_parser/src/simple_decoder_parser_arc_eager.c