8025145: [macosx]: java 7 does not recognize tiff image on clipboard

Reviewed-by: anthony, serb
Contributed-by: anton.nashatyrev@oracle.com

src/macosx/lib/flavormap.properties

@@ -76,5 +76,6 @@ FILE_NAME=application/x-java-file-list;class=java.util.List
 text/uri-list=application/x-java-file-list;class=java.util.List
 PNG=image/x-java-image;class=java.awt.Image
 JFIF=image/x-java-image;class=java.awt.Image
+TIFF=image/x-java-image;class=java.awt.Image
 RICH_TEXT=text/rtf
 HTML=text/html;charset=utf-8;eoln="\r\n";terminators=1