pkgs/shells/bash: updated "interactive" bash to version 4.2

The non-interactive variant, which is part of stdenv, remains unchanged.

svn path=/nixpkgs/trunk/; revision=29523

pkgs/shells/bash/update-patch-set.sh

@@ -16,7 +16,7 @@ VERSION="$2"
 VERSION_CONDENSED="$(echo $VERSION | sed -es/\\.//g)"
 
 GPG="$(if $(type -P gpg2 > /dev/null); then echo gpg2; else echo gpg; fi)"
-PATCH_LIST="$PROJECT-patches.nix"
+PATCH_LIST="$PROJECT-$VERSION-patches.nix"
 
 set -e