(next-error group, face): Move before first use.

(next-error group, face): Move before first use.
(next-error-highlight, next-error-highlight-no-select): Likewise.

(line-move-invisible-p): Renamed from line-move-invisible.
(line-move): New args NOERROR and TO-END.
Return t if if succeed in moving specified number of lines.
(move-end-of-line): New function.

(beginning-of-buffer-other-window, end-of-buffer-other-window):
Use with-no-warnings.