Subject: 24.3.50; `line-move', `line-move-visual' need doc strings

From: Drew Adams <[email-masked]>
Date: Thu, 11 Jul 2013 08:40:49 -0700 (PDT)

These functions, especially `line-move', are used all over the place.
They need doc strings, with complete descriptions of their parameters.

In GNU Emacs 24.3.50.1 (i686-pc-mingw32)
 of 2013-07-01 on LEG570
Bzr revision: 113246 [email-masked]
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --prefix=/c/usr --enable-checking CFLAGS='-O0 -g3'
 CPPFLAGS='-DGLYPH_DEBUG=1 -I/c/usr/include''