Fix 1.3 compatibility issue with string matchers

hamcrest/src/main/java/org/hamcrest/core/StringContains.java

@@ -6,6 +6,8 @@
  * Tests if the argument is a string that contains a specific substring.
  */
 public class StringContains extends SubstringMatcher {
+    public StringContains(String substring) { this(false, substring); }
+
     public StringContains(boolean ignoringCase, String substring) {
         super("containing", ignoringCase, substring);
     }

hamcrest/src/main/java/org/hamcrest/core/StringEndsWith.java

@@ -6,6 +6,8 @@
  * Tests if the argument is a string that ends with a specific substring.
  */
 public class StringEndsWith extends SubstringMatcher {
+    public StringEndsWith(String substring) { this(false, substring); }
+
     public StringEndsWith(boolean ignoringCase, String substring) { super("ending with", ignoringCase, substring); }
 
     @Override

hamcrest/src/main/java/org/hamcrest/core/StringStartsWith.java

@@ -6,6 +6,8 @@
  * Tests if the argument is a string that starts with a specific substring.
  */
 public class StringStartsWith extends SubstringMatcher {
+    public StringStartsWith(String substring) { this(false, substring); }
+
     public StringStartsWith(boolean ignoringCase, String substring) { super("starting with", ignoringCase, substring); }
 
     @Override