bug#1350: 23.0.60; Index the statement that a shifted key gets the unshifted behavior

["Drew Adams" <drew.adams@oracle.com>]

In response to a question on help-gnu-emacs, I looked in the manuals
for the explanation that a shifted key sequence has, by default, the
behavior of the unshifted equivalent.
 
The statement is in node Key Sequence Input of the Elisp manual.
 
I looked in both the Emacs manual and the Elisp manual, and it took
some time to find this statement, even though I knew it was there
somewhere.
 
This should be indexed under "shift". And it should perhaps be added
somewhere in the Emacs manual - users will wonder, as this user did,
why `C-L' picks up the key binding of `C-l'.
 

In GNU Emacs 23.0.60.1 (i386-mingw-nt5.1.2600)
 of 2008-11-08 on LENNART-69DE564
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --no-opt --cflags -Ic:/g/include
-fno-crossjumping'