Merge pull request #30 from tc1989tc/master

增加识别shitf以及caplocks扫描码，进行特殊字符的转换以大小写转换
Merge pull request #31 from tc1989tc/master

the pthread key
基本所有按键都至少不死机了
保证按键都不死机
让所有按键都不死机
Merge pull request #32 from guotong1988/master

the died key should be merged to master~~~~~~~~
Move get_current_pt_specific/set_current_pt_specific to pthread library, deleted them from YSTD.
some common library need to be compiled in different fPIC mode.
Test ring buffer will not passed
Merge pull request #25 from gridnow/master

testring buff bug