Add missing #include svn path=/import/netsurf/; revision=1483
Replace bitmap_redraw() with plot.bitmap(). svn path=/import/netsurf/; revision=1316
Norcroft compile fixes. svn path=/import/netsurf/; revision=1267
Add generic bitmap functions. Move jpeg and mng code from riscos/ to image/ and update to use bitmap. Note: background tiling and drawfile export for jpeg and mng/png are broken. svn path=/import/netsurf/; revision=1265