* Do not present an image bigger than the source when 'frameless' option is used

* Do not present an image bigger than the source when 'frameless' option is used
* This is consistent with the 'thumb' option now:
** Unchanged: [[Image:xyz.jpg|thumb]], [[Image:xyz.jpg|thumb|200px]] do not blow up an image larger than the source
** Unchanged: [[Image:xyz.jpg|frameless]] does not blow up an image
** New: [[Image:xyz.jpg|frameless|200px]] does not blow up an image
** Unchanged: [[Image:xyz.jpg|200px]] still blows up an image