allow parameter in like escape

as required by JPQL

hibernate-core/src/main/antlr/org/hibernate/grammars/hql/HqlParser.g4

@@ -424,7 +424,7 @@ inList
 	;
 
 likeEscape
-	: ESCAPE STRING_LITERAL
+	: ESCAPE (STRING_LITERAL | parameter)
 	;
 
 

hibernate-core/src/test/java/org/hibernate/orm/test/query/hql/ILikeTest.java

@@ -99,6 +99,18 @@ public class ILikeTest {
 		);
 	}
 
+	@Test
+	public void testLikeEscapeParam(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					Query q = session.createQuery( "from BasicEntity be where be.data like 'Pr%$_%' escape :esc" )
+							.setParameter("esc", "$");
+					List l = q.getResultList();
+					assertEquals( 2, l.size() );
+				}
+		);
+	}
+
 	@Test
 	public void testNotLikeEscape(SessionFactoryScope scope) {
 		scope.inTransaction(