12k lines of sequencer back! Only seqaudio.c skipped for now.
Notes:
- it only draws now, nothing refreshes or edits.
- fixed bug in view2d.c with vertical grid step being 0.0f
- render code and fileselect code is #ifdeffed out
- sequence evaluation code moved to blenkernel, so it can
be used for render without bad level calls
General note; sequencer code is very untidy, mixing styles too
much. Tried to clean it some, but it would be nice if formatting
is kept consistant from now on.
