app-misc/jq: fix buffer overflow (bug #580606) and other updates

- add upstream metadata
- add arm architecture
- refactor econf args to an array
- move DOCS and PATCHES to their appropriate functions
- replace custom find with prune_libtool_files()

Gentoo-Bug: 580606

app-misc/jq/files/jq-1.5-heap_buffer_overflow_in_tokenadd.patch

@@ -0,0 +1,34 @@
+From 8eb1367ca44e772963e704a700ef72ae2e12babd Mon Sep 17 00:00:00 2001
+From: Nicolas Williams <nico@cryptonector.com>
+Date: Sat, 24 Oct 2015 17:24:57 -0500
+Subject: [PATCH] Heap buffer overflow in tokenadd() (fix #105)
+
+This was an off-by one: the NUL terminator byte was not allocated on
+resize.  This was triggered by JSON-encoded numbers longer than 256
+bytes.
+---
+ src/jv_parse.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/jv_parse.c b/src/jv_parse.c
+index 3102ed4..84245b8 100644
+--- a/jv_parse.c
++++ b/jv_parse.c
+@@ -383,7 +383,7 @@ static pfunc stream_token(struct jv_parser* p, char ch) {
+ 
+ static void tokenadd(struct jv_parser* p, char c) {
+   assert(p->tokenpos <= p->tokenlen);
+-  if (p->tokenpos == p->tokenlen) {
++  if (p->tokenpos >= (p->tokenlen - 1)) {
+     p->tokenlen = p->tokenlen*2 + 256;
+     p->tokenbuf = jv_mem_realloc(p->tokenbuf, p->tokenlen);
+   }
+@@ -485,7 +485,7 @@ static pfunc check_literal(struct jv_parser* p) {
+     TRY(value(p, v));
+   } else {
+     // FIXME: better parser
+-    p->tokenbuf[p->tokenpos] = 0; // FIXME: invalid
++    p->tokenbuf[p->tokenpos] = 0;
+     char* end = 0;
+     double d = jvp_strtod(&p->dtoa, p->tokenbuf, &end);
+     if (end == 0 || *end != 0)

app-misc/jq/jq-1.5-r2.ebuild

@@ -0,0 +1,60 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=6
+
+inherit autotools eutils
+
+DESCRIPTION="A lightweight and flexible command-line JSON processor"
+HOMEPAGE="https://stedolan.github.com/jq/"
+SRC_URI="https://github.com/stedolan/jq/releases/download/${P}/${P}.tar.gz"
+
+LICENSE="MIT CC-BY-3.0"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~x86 ~x64-macos"
+IUSE="oniguruma static-libs test"
+
+DEPEND="
+	>=sys-devel/bison-3.0
+	sys-devel/flex
+	oniguruma? ( dev-libs/oniguruma[static-libs?] )
+	test? ( dev-util/valgrind )
+"
+RDEPEND="
+	!static-libs? (
+		oniguruma? ( dev-libs/oniguruma[static-libs?] )
+	)
+"
+
+src_prepare() {
+	local PATCHES=(
+		"${FILESDIR}"/${PN}-1.5-dynamic-link.patch
+		"${FILESDIR}"/${PN}-1.5-remove-automagic-dep-on-oniguruma.patch
+		"${FILESDIR}"/${PN}-1.5-heap_buffer_overflow_in_tokenadd.patch
+	)
+
+	sed -i '/^dist_doc_DATA/d' Makefile.am || die
+	sed -i -r "s:(m4_define\(\[jq_version\],) .+\):\1 \[${PV}\]):" \
+		configure.ac || die
+
+	default
+	eautoreconf
+}
+
+src_configure() {
+	local econfargs=(
+		# don't try to rebuild docs
+		--disable-docs
+		$(use_enable static-libs static)
+		$(use_with oniguruma)
+	)
+	econf "${econfargs[@]}"
+}
+
+src_install() {
+	local DOCS=( AUTHORS README )
+	default
+
+	use static-libs || prune_libtool_files
+}