Bug#527006: kdegraphics should NOT try to use the WARMING_UP symbols yet
Sane only intends to support the WARMING_UP status in 1.1.0 and since
current is 1.0.20, kdegraphics (specifically libksane) is wrong for
trying to use it. It should have appropriate #ifdef's to check if it
is defined and it not, fall back to a delay loop or similar, just as
the upsteam sane code does in 1.0.20.
For a while libsane's git tree did have it enabled, but they #if 0 the
WARMING_UP stuff before releasing 1.0.20.