Bugfix

[emaiannone]

• Change indent style to Spaces
• Do not remove line comments (https://stackoverflow.com/questions/3019729/how-to-access-comments-from-the-java-compiler-tree-api-generated-ast/9884987#9884987)
• Do not reformat Javadoc
• MIM check internal proprieties of direct superclasses
• MIM check internal proprieties of indirect superclasses
• IS check better for internal
• LT should propose interrupt() and not stop()
• LT should check if the subject thread object is an instance variable
• Keep found indent style (how to determine it?)
• MIM check should not check inner classes (they cannot have static members)
• IS must check only for a single assignement body (already done?)
• IS allow different argument names