Fix JVM signatures for the java.lang.Class method.
Fix JVM signatures for the java.lang.Class method.

The methods defined in the Class class contain semicolons at the end of the signatures for methods which return primitives, while these are only required after class names. As a result, a JVM error occurs when attempting to call any of the affected methods.
jaykwon/pyjnius,aolihu/pyjnius,ibobalo/pyjnius,benson-basis/pyjnius,Konubinix/pyjnius,kivy/pyjnius,niavlys/pyjnius,jelford/pyjnius,Konubinix/pyjnius,kivy/pyjnius,pombredanne/pyjnius,benson-basis/pyjnius,niavlys/pyjnius,ibobalo/pyjnius,jk1ng/pyjnius,kived/pyjnius,jaykwon/pyjnius,aolihu/pyjnius,kived/pyjnius,pombredanne/pyjnius,jelford/pyjnius,jk1ng/pyjnius,kivy/pyjnius