gobject-introspection: rename package

camelCase package name was a huge inconsistency in GNOME package set.

pkgs/tools/security/gencfsm/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, autoconf, automake, intltool, libtool, pkgconfig, encfs
-, glib , gnome3, gtk3, libgnome-keyring, vala, wrapGAppsHook, xorg, gobjectIntrospection
+, glib , gnome3, gtk3, libgnome-keyring, vala, wrapGAppsHook, xorg, gobject-introspection
 }:
 
 stdenv.mkDerivation rec {
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ autoconf automake intltool libtool vala glib encfs
     gtk3 libgnome-keyring gnome3.libgee xorg.libSM xorg.libICE
-    wrapGAppsHook gobjectIntrospection  ];
+    wrapGAppsHook gobject-introspection  ];
 
   patches = [ ./makefile-mkdir.patch ];