bug#7524: 24.0.50; backquote converts newlines in strings to "\n"

[Drew Adams]

Evaluate this:
 
`("Foo" . (lambda ()
            "Four score and seven years ago
Our forefathers brought forth etc.
Etc., etc., etc."
            (message "HOWDY")))
 
That doc string is a literal string with two embedded newline chars.
Evaluation converts each of those chars to a string of two chars: "\n":
 
("Foo" lambda nil "Four score and seven years ago\nOur forefathers brought forth
etc.\nEtc., etc., etc."
 (message "Howdy"))
 
Shouldn't happen.  (This is particularly messy when used in defcustom
values.)
 

In GNU Emacs 24.0.50.1 (i386-mingw-nt5.1.2600)
 of 2010-11-30 on 3249CTO
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (4.4) --no-opt --cflags
-Ic:/imagesupport/include'