Merge pull request #5 from aholic/master

gg=G for MPSegment.hpp
mv unicode <=> utf8 from transcode.hpp into Limonp/str_functs.hpp
add gbk
modify segment.cpp
add testlines.gbk
Merge branch 'master' into dev
modify segment.cpp for example
ci for dinner
ci for save
add init dipose into ISegment.hpp
modify cmakelists.txt for gbk encoding
merge upstream