The pango docs say to use _LOW for accelerators, but that causes the line
to be drawn beneath the ink extents which for us may be outside the area
that gets displayed and we end up with no line at all. We also don't want
to extend every menu entry with enough space to fit this possible line.
Set version stuff to 3.5.0-rc1.
Copy the CHANGELOG from 3.4-working.
Rename the obt-4.0 and obrender-4.0 pkgconfig stuff to obt-3.5 and obrender-3.5
Rename the "render" directory to "obrender" so that the public headers can be
installed in <obrender/*>
