问题：同步、cleanup都会出现下面的提示
svn: E155017: Can't install '*' from pristine store, because no checksum is recorded for this file
svn报错：“Previous operation has not finished; run 'cleanup' if it was interrupted“
解决：
一般的clean up报错，只要回到当前目录上一层进行clean up就能继续提交svn内容。但是，当回到最上层目录都无法clean up时，需要按照如下步骤：
sqlite3 PROJECT-ROOT.svnwc.db
delete from work_queue
sqlite3 E:..svnwc.db
delete from work_queue