Fix missing trailing newlines, move tests to exec directory

compile-firm/AssignmentReturnValue.java → exec/AssignmentReturnValue.java

@@ -10,4 +10,4 @@ class B {
         A a = new A();
         System.out.println(a.a());
     }
-}
\ No newline at end of file
+}

compile-firm/Factorial.java → exec/Factorial.java

@@ -11,4 +11,4 @@ class Factorial{
         System.out.println(fact);
     }
 
-}
\ No newline at end of file
+}

compile-firm/LinkedList.java → exec/LinkedList2.java

-class LinkedList {
+class LinkedList2 {
     public static void main(String[] args) {
         List list = new List();
         list.init();

compile-firm/Maths.java → exec/Maths.java

@@ -15,4 +15,4 @@ class Math {
         int c = a % b + 1;
         System.out.println(c);
     }
-}
\ No newline at end of file
+}

compile-firm/QuickSort.java → exec/QuickSort.java

@@ -102,4 +102,4 @@ class B {
         }
         return result;
     }
-}
\ No newline at end of file
+}