Merge pull request alibaba#1077 from wenshao/master druid-1.0.17

Merge pull request alibaba#971 from yakolee/master 1.0.16

Merge pull request alibaba#885 from yakolee/master 1.0.15

Merge pull request alibaba#816 from yakolee/master 1.0.14

Merge pull request alibaba#794 from yakolee/master support sqlserver waitfor

Merge pull request alibaba#753 from yakolee/master bugfix for alibaba#728

add license 

add license 

Merge pull request alibaba#643 from yakolee/master improve sqlwall

Merge pull request alibaba#614 from yakolee/master bugfix for into outfile alibaba#582