classify.c, diff.c, edit.c, edit.h, entries.c, fileattr.c,
find_names.c, history.c, ignore.c, import.c, lock.c, logmsg.c, ls.c,
modules.c, recurse.c, release.c, remove.c, tag.c, update.c, verify.c,
watch.c: Use stricter include formatting.
* cvs.h: Move decls to...
* classify.h, ignore.h, logmsg.h, recurse.h: ...these new files.