Summary:
Makes readfile.c more clear and easier to navigate in.
We would need to do such a move when we'll do 2.70 bump
anyway. So better be prepared.
In fact, as soon 2.70 bumo is done i would think we'd
better create versioning_270 file and do version code
there. Otherwise readfile.c will grow up dramatically
again.
Reviewers: brecht, campbellbarton
Reviewed By: brecht
Differential Revision: http://developer.blender.org/D60
0d24c6f0d0