There are a number of places where multiple spaces were being used
intentionally (extracted directly from disk labels, separating titles
from subtitles, tabulation, etc.).
Also fixed misspelled Twinbee Yahho titles.
Get rid of a couple of copies of the CC0 text. Add header comment to
CC0 files to remind people editing them what the terms are. Also add
some missing XML headers. The header comments in layouts won't bloat
the binary - they get stripped out before compressing, same as any other
comments.
