Merge branch 'pull-request/2061' into PHP-5.6

* pull-request/2061:
  Recognize TDS versions 7.3 and 7.4

Author: smalyshev

ext/pdo_dblib/dblib_driver.c

@@ -280,6 +280,12 @@ static int pdo_dblib_handle_factory(pdo_dbh_t *dbh, zval *driver_options TSRMLS_
 #ifdef DBVERSION_72
 		,{"7.2",DBVERSION_72}
 		,{"8.0",DBVERSION_72}
+#endif
+#ifdef DBVERSION_73
+		,{"7.3",DBVERSION_73}
+#endif
+#ifdef DBVERSION_74
+		,{"7.4",DBVERSION_74}
 #endif
 		,{"10.0",DBVERSION_100}
 		,{"auto",0} /* Only works with FreeTDS. Other drivers will bork */