replace the shaded line operation with a version that (a) tries to directly render...

replace the shaded line operation with a version that (a) tries to directly render to the bitmap if it is lockable, (b) uses DoHookClipRects to obtain the correct bounds/bitmap to render into and (c) directly calls the gfx hidd to prevent rechecking the rastport clipping.

git-svn-id: https://svn.aros.org/svn/aros/trunk/AROS@48249 fb15a70f-31f2-0310-bbcc-cdcc74a49acc