use isspace (cctype) instead of is_space_chars
move some functions to scheme_modoki_core.cpp
make is_tokusyu_keisiki static
convert scheme_modoki_core.cpp from SJIS to UTF-8
make run_script() separate from main()
create global_config
support of reading script from file
make first argument for print_data const
added function read and write
separate system_control.cpp from kumikomi_tetuduki.cpp
don't call print_number_of_data() on destructor of creater_t
create --print-statistics-on-end option and don't print number of data on exit on default