Merge pull request #3 from HuiLi/master

tongbu
更新vdbesort.c源码分析
update vdbesort.c again
update vdbesort.c
完成
update vdbesort.c 2014-12-15
Merge pull request #119 from tongyou1992/master

111
update vdbesort.c 2014-12-16
Update os_unix.c
Merge pull request #125 from Jing--Li/master

update vdbesort.c 2014-12-16night
Merge pull request #126 from MacQiaolibo/patch-1

Update os_unix.c
Merge pull request #31 from HuiLi/master

合并更新