add a button called"借书"

Signed-off-by: maidousj <maidousj@163.com>
Merge branch 'master' of https://github.com/allen0125/bookshop.git
修改的东西比较多，借书时候有个bug没有找到原因 明天再看吧

Signed-off-by: maidousj <maidousj@163.com>
Merge branch 'master' of https://github.com/allen0125/bookshop.git

Conflicts:
	src/com/sx/db/ReaderDb.java
	src/com/sx/db/mapper/BookTableMapper.java
	src/com/sx/db/mapper/ReaderTableMapper.xml
	src/com/sx/fun/BookOp.java
	src/com/sx/view/BookManage.java
	src/com/sx/view/ModifyBookFrame.java


Signed-off-by: maidousj <maidousj@163.com>
Merge branch 'master' of https://github.com/allen0125/bookshop.git
没合并对可能。。需要重新合并
Conflicts:
	src/com/sx/db/ReaderDb.java
	src/com/sx/db/mapper/ReaderTableMapper.java
	src/com/sx/view/AddReaderFrame.java


Signed-off-by: maidousj <maidousj@163.com>