New Create:
create a new class : PopupDialog.java
function: show the dialog message as you want

Modify:
utilizing the new class to show dialogs in EnableRLAnnotation.java
Merge branch 'master' of http://140.124.181.95:8888/robusta/robusta
removed redundant close IO source function in ReportContentCreator.java

added closeStream function to EnableRLAnnotation.java
Merge branch 'master' of http://140.124.181.95:8888/robusta/robusta
added a test class "CarelessCleanupDefinitionExample.java" for checking if our tool matches professor's paper's CC definition.