this will allow me to specify a
[[Image:imagename.png]] link to an
image that is not stored locally but rather on a shared image folder
on wiki A. But does it pull down the image that is linked within an
article. When the article comes through on wiki B, it appears that the
link to the image is a complete link and not a wiki link. Would it
still resolve the $wgshareduploadspath?
According to [[Help:Images]] on Wikipedia, [[Image:imagename.png]]
will be turned into the picture with that file name as stored on the
local wiki if it exists, if it doesn't exist it will look at the wiki
specificed in the sharedupload parameter and use that (if it still
doesn't exist, it will be a redlink).