Signed-off-by: NXinbo Weng <xihuanbo_0521@zju.edu.cn>

fix my errors
Signed-off-by: NXinbo Weng <xihuanbo_0521@zju.edu.cn>

Added appropriate executable permissions (755) in github shell scripts so jenkins can run them w/o modifying

Adding Jenkins files to /hack/jenkins  After this commit goes throught, changes to jenkins should be made to use the scripts in this /hack/jenkins folder directly