scalebar and reference map not made

[carl.anderson@…]

(in CVS for the past month or so maybe longer)

scalebar and reference maps are not being put into the mappath URL

msSaveImage (in maputil.c) was changed to only use MAPPATH if a mapobj was
passed in.

msGenerateImages (maptemplate.c) was not changed to pass a map object for
scalebars, legends, or reference maps.

an obvious but possibly wrong fix would be to add mapobjects to the msSaveImage
calls in msGenerateImages.