updated for version 7.4.393
Problem:    Text drawing on newer MS-Windows systems is suboptimal.  Some
	    multi-byte characters are not displayed, even though the same font
	    in Notepad can display them. (Srinath Avadhanula)
Solution:   Add the 'renderoptions' option to enable Direct-X drawing. (Taro
	    Muraoka)
Added tag v7-4-393 for changeset 1bff71d20262