ant 构建脚本中，把doc格式的文件转换成unix的，以便在linux系统中直接使用

http://ant.apache.org/manual/Tasks/fixcrlf.html

<fixcrlf srcdir="${src}" includes="**/*.sh"
         eol="lf" eof="remove" />
Replaces EOLs with LF characters and removes eof characters from the shell scripts. Tabs and spaces are left as is.