media-plugins/gimp-lensfun: EAPI-7 bump, fix build w/ exiv2-0.27.1

Restrict to <media-gfx/gimp-2.10.0 as it is broken with latest GIMP.

Bug: https://bugs.gentoo.org/686138
Package-Manager: Portage-2.3.67, Repoman-2.3.16
Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>

media-plugins/gimp-lensfun/files/gimp-lensfun-0.2.4-exiv2-0.27.1.patch

@@ -0,0 +1,12 @@
+--- a/src/gimplensfun.cpp
++++ b/src/gimplensfun.cpp
+@@ -31,8 +31,7 @@
+ #include <libgimp/gimp.h>
+ #include <libgimp/gimpui.h>
+ 
+-#include <exiv2/image.hpp>
+-#include <exiv2/exif.hpp>
++#include <exiv2/exiv2.hpp>
+ 
+ #define VERSIONSTR "0.2.4"
+ 

media-plugins/gimp-lensfun/gimp-lensfun-0.2.4-r1.ebuild

@@ -0,0 +1,50 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit toolchain-funcs
+
+DESCRIPTION="Gimp plugin to correct lens distortions"
+HOMEPAGE="https://seebk.github.io/GIMP-Lensfun/"
+SRC_URI="https://github.com/seebk/GIMP-Lensfun/archive/${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="openmp"
+
+BDEPEND="
+	virtual/pkgconfig
+"
+DEPEND="
+	media-gfx/exiv2
+	<media-gfx/gimp-2.10.0
+	>=media-libs/lensfun-0.3.2
+"
+RDEPEND="${DEPEND}"
+
+PATCHES=( "${FILESDIR}/${P}-exiv2-0.27.1.patch" )
+
+S=${WORKDIR}/GIMP-Lensfun-${PV}
+
+pkg_setup() {
+	if use openmp && [[ ${MERGE_TYPE} != binary ]]; then
+		tc-has-openmp || die "Please switch to an openmp compatible compiler"
+	fi
+}
+
+src_prepare() {
+	default
+
+	if ! use openmp; then
+		sed -i "s/-fopenmp//g" Makefile || die
+	fi
+
+	tc-export CXX
+}
+
+src_install() {
+	exeinto $(gimptool-2.0 --gimpplugindir)/plug-ins
+	doexe ${PN}
+}