Fix column information of the C/C++ and Scheme frontend.

jplag.frontend.cpp/src/main/java/de/jplag/cpp/Language.java

@@ -40,7 +40,7 @@ public class Language implements de.jplag.Language {
 
     @Override
     public boolean supportsColumns() {
-        return false;
+        return true;
     }
 
     @Override

jplag.frontend.scheme/src/main/java/de/jplag/scheme/Language.java

@@ -42,7 +42,7 @@ public class Language implements de.jplag.Language {
 
     @Override
     public boolean supportsColumns() {
-        return false;
+        return true;
     }
 
     @Override