Started reorganization.
Might have all that's needed, maybe.
Added / changed ignore rules, added runs directory to avoid errors from planAhead.
Fixed missing driver for SPDIF signal, fixed gitignore in .runs dirs.
Reset run data to match empty impl and synth dirs.
Created 64-core project, added defines to version.v and use them in top level to enable 64 vs 16, 7020 vs 7010 and HDMI vs non-HDMI.
set / clear, it's only off by 1.
Should support the E64 now, untested.
Cleaned-up timing issue for E64.  Had to change to manual compile order for E16 project.
Readme updates
Added 7010 project, renamed top-level file to fit w/7010 or 7020 projects, split ucf files into generic placement, 7020 extra pins, and timing.  Added project-level READMEs.