use REGEXP operator for sqlite

lib/Doctrine/DBAL/Platforms/SqlitePlatform.php

@@ -45,7 +45,7 @@ class SqlitePlatform extends AbstractPlatform
      */
     public function getRegexpExpression()
     {
-        return 'RLIKE';
+        return 'REGEXP';
     }
 
     /**

tests/Doctrine/Tests/DBAL/Platforms/SqlitePlatformTest.php

@@ -33,7 +33,7 @@ class SqlitePlatformTest extends AbstractPlatformTestCase
 
     public function testGeneratesSqlSnippets()
     {
-        $this->assertEquals('RLIKE', $this->_platform->getRegexpExpression(), 'Regular expression operator is not correct');
+        $this->assertEquals('REGEXP', $this->_platform->getRegexpExpression(), 'Regular expression operator is not correct');
         $this->assertEquals('SUBSTR(column, 5, LENGTH(column))', $this->_platform->getSubstringExpression('column', 5), 'Substring expression without length is not correct');
         $this->assertEquals('SUBSTR(column, 0, 5)', $this->_platform->getSubstringExpression('column', 0, 5), 'Substring expression with length is not correct');
     }