Add forked Maatkit tools in bin/ and their tests in t/.

t/pt-fk-error-logger/samples/fke.sql

@@ -0,0 +1,20 @@
+-- This will cause a foreign key error.
+
+DROP TABLE IF EXISTS child;
+DROP TABLE IF EXISTS parent;
+
+CREATE TABLE parent (
+   id INT NOT NULL,
+   PRIMARY KEY (id)
+) ENGINE=INNODB;
+
+
+CREATE TABLE child (
+   id INT,
+   parent_id INT,
+   INDEX par_ind (parent_id),
+   FOREIGN KEY (parent_id) REFERENCES parent(id)
+) ENGINE=INNODB;
+
+INSERT INTO parent VALUES (1), (2), (3);
+INSERT INTO child VALUES (1, 9);  -- Error!