Resolve "Do not generate dependency methods if incremental is active"

Closes #43 (closed)

ragconnect.base/src/main/jastadd/Errors.jrag

 aspect Errors {
-  coll Set<ErrorMessage> RagConnect.errors()
-    [new TreeSet<ErrorMessage>()]
+  coll Set<CompilerMessage> RagConnect.errors()
+    [new TreeSet<CompilerMessage>()]
     root RagConnect;
 
   EndpointDefinition contributes error("Endpoint definition already defined for " + parentTypeName() + "." + entityName())
@@ -74,66 +74,8 @@ aspect ErrorHelpers {
     }
     return null;
   }
-}
-
-aspect ErrorMessage {
-  public class ErrorMessage implements Comparable<ErrorMessage> {
-    private final ASTNode node;
-    private final String filename;
-    private final int line;
-    private final int col;
-    private final String message;
-
-    public ErrorMessage(ASTNode node, String message) {
-      this.node = node;
-      this.filename = node.containedFileName();
-      this.line = node.getStartLine();
-      this.col = node.getStartColumn();
-      this.message = message;
-    }
-
-    public ASTNode getNode() {
-      return node;
-    }
-
-    public int getLine() {
-      return line;
-    }
-
-    public int getCol() {
-      return col;
-    }
-
-    public String getMessage() {
-      return message;
-    }
-
-    public String toString() {
-      return filename + " Line " + line + ", column " + col + ": " + message;
-    }
-
-    @Override
-    public int compareTo(ErrorMessage err) {
-      int n = filename.compareTo(err.filename);
-      if (n != 0) {
-        return n;
-      }
-
-      n = line - err.line;
-      if (n != 0) {
-        return n;
-      }
-
-      n = col - err.col;
-      if (n != 0) {
-        return n;
-      }
-
-      return message.compareTo(err.message);
-    }
-  }
 
-  protected ErrorMessage ASTNode.error(String message) {
-    return new ErrorMessage(this, message);
+  protected CompilerMessage ASTNode.error(String message) {
+    return new CompilerMessage(this, message);
   }
 }