[Cin] libtiff 4.7.0 and libtheora 1.2.0?

[Andrea paz]

> Andrea, have you had time to test the Tiff sequence at 4.7.0? I already checked it into GIT but can revert if necessary.  I did not see any problems with it.  Thanks.

Only by using problematic tiff images with various non-std resolutions
do I get a rendering with artifacts. In all other cases everything is
fine and the renderings are fast.
I would leave 4.7.0 in git.