sys-shells/dash: import from upstream Gentoo

The only reason we have dash in the cros overlay is so that we can install
a /bin/sh symlink pointing to dash in the board root.  Once we move that
symlink to chromeos-base, we can drop all the dash customizations.

BUG=chromium-os:21901
TEST=`emerge chromeos-base bash` and see /bin/sh -> bash
TEST=`emerge-amd64-generic chromeos-base dash` and see /bin/sh -> dash
TEST=`emerge-arm-generic chromeos-base dash` and see /bin/sh -> dash
TEST=`emerge-x86-generic chromeos-base dash` and see /bin/sh -> dash

Change-Id: Iaec86219ad64d086e261187e6f7c3436eb7890cd
Reviewed-on: https://gerrit.chromium.org/gerrit/11408
Reviewed-by: David James <davidjames@chromium.org>
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>

sdk_container/src/third_party/portage-stable/app-shells/dash/dash-0.5.5.1.7.ebuild

@@ -0,0 +1,56 @@
+# Copyright 1999-2011 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/app-shells/dash/dash-0.5.5.1.7.ebuild,v 1.6 2011/10/05 05:52:56 maekke Exp $
+
+EAPI="2"
+
+inherit autotools eutils flag-o-matic toolchain-funcs
+
+DEB_PV=${PV%.*}
+DEB_PATCH=${PV##*.}
+DEB_PF="${PN}_${DEB_PV}-${DEB_PATCH}"
+MY_P="${PN}-${DEB_PV}"
+
+DESCRIPTION="DASH is a direct descendant of the NetBSD version of ash (the Almquist SHell) and is POSIX compliant"
+HOMEPAGE="http://gondor.apana.org.au/~herbert/dash/"
+SRC_URI="http://gondor.apana.org.au/~herbert/dash/files/${PN}-${DEB_PV}.tar.gz
+	mirror://debian/pool/main/d/dash/${DEB_PF}.diff.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~alpha amd64 arm hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc x86"
+IUSE="libedit static"
+
+RDEPEND="!static? ( libedit? ( dev-libs/libedit ) )"
+DEPEND="${RDEPEND}
+	dev-util/pkgconfig
+	libedit? ( static? ( dev-libs/libedit[static-libs] ) )"
+
+S=${WORKDIR}/${MY_P}
+
+src_prepare() {
+	epatch "${WORKDIR}"/${DEB_PF}.diff
+	epatch */debian/diff/*
+	epatch "${FILESDIR}"/${PN}-0.5.5.1-octal.patch #337329
+
+	# Fix the invalid sort
+	sed -i -e 's/LC_COLLATE=C/LC_ALL=C/g' src/mkbuiltins
+
+	# Use pkg-config for libedit linkage
+	sed -i "/LIBS/s:-ledit:\`$(tc-getPKG_CONFIG) --libs libedit $(use static && echo --static)\`:" configure.ac
+
+	# May as well, as the debian patches force this anyway
+	eautoreconf
+}
+
+src_configure() {
+	use static && append-ldflags -static
+	econf \
+		--bindir=/bin \
+		$(use_with libedit)
+}
+
+src_install() {
+	emake install DESTDIR="${D}" || die
+	dodoc ChangeLog */debian/changelog
+}

sdk_container/src/third_party/portage-stable/app-shells/dash/files/dash-0.5.5.1-octal.patch

@@ -0,0 +1,29 @@
+http://bugs.gentoo.org/337329
+
+do not interpret \\1 as an octal sequence.  require it to start with \\0.
+
+--- a/src/bltin/printf.c
++++ b/src/bltin/printf.c
+@@ -247,18 +247,10 @@ conv_escape_str(char *str)
+ 		 * They start with a \0, and are followed by 0, 1, 2, 
+ 		 * or 3 octal digits. 
+ 		 */
+-		if (ch == '0') {
+-			unsigned char i;
+-			i = 3;
+-			ch = 0;
+-			do {
+-				unsigned k = octtobin(*str);
+-				if (k > 7)
+-					break;
+-				str++;
+-				ch <<= 3;
+-				ch += k;
+-			} while (--i);
++		if (ch >= '1' && ch <= '9') {
++			/* Filter \1...\9; let \0 fall to conv_escape(). */
++			ch = '\\';
++			--str;
+ 			continue;
+ 		}
+