distro: libsigsegv: Use a single output.

* distro/packages/libsigsegv.scm (libsigsegv): Use just a single output,
  otherwise nothing ends up in `out' as a consequence of commit a06a99ff.
  Reported by Andreas Enge <andreas@enge.fr>.

distro/packages/libsigsegv.scm

 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -35,7 +35,6 @@ (define-public libsigsegv
             (sha256
              (base32 "16hrs8k3nmc7a8jam5j1fpspd6sdpkamskvsdpcw6m29vnis8q44"))))
    (build-system gnu-build-system)
-   (outputs '("out" "lib"))                   ; separate libdir from the rest
    (home-page "http://www.gnu.org/software/libsigsegv/")
    (synopsis "GNU libsigsegv, a library to handle page faults in user mode")
    (description

doc/guix.texi

@@ -219,7 +219,7 @@ Install @var{package}.
 @code{guile}, or a package name followed by a hyphen and version number,
 such as @code{guile-1.8}.  In addition, @var{package} may contain a
 colon, followed by the name of one of the outputs of the package, as in
-@code{gcc:doc} or @code{libsigsegv-2.10:lib}.
+@code{gcc:doc} or @code{binutils-2.22:lib}.
 
 @item --remove=@var{package}
 @itemx -r @var{package}