graphics/kphotoalbum: prepare for exiv2-0.27

Import gentoo's patch from:
https://gitweb.gentoo.org/repo/gentoo.git/tree/media-gfx/kphotoalbum/files/kphotoalbum-5.4-exiv2-0.27.patch?id=8487b360db9fcf049fe9a5543469b8e6fee28e4d

PR:		235943

graphics/kphotoalbum/Makefile

@@ -2,6 +2,7 @@
 
 PORTNAME=	kphotoalbum
 DISTVERSION=	5.4.2
+PORTREVISION=	1
 CATEGORIES=	graphics kde
 MASTER_SITES=	KDE/stable/${PORTNAME}/${PORTVERSION}/
 DIST_SUBDIR=	KDE

graphics/kphotoalbum/files/patch-gentoo_7b7f6

@@ -0,0 +1,62 @@
+From 41c7da0531c8a1eb7046345c2b991e7a5d1e6657 Mon Sep 17 00:00:00 2001
+From: Johannes Zarl-Zierl <johannes@zarl-zierl.at>
+Date: Sun, 30 Dec 2018 23:36:24 +0100
+Subject: Use Exiv2 0.27 if available.
+
+Beginning with version 0.27, Exiv2 ships with cmake package config
+files.
+---
+ CMakeLists.txt | 12 +++++++++++-
+ 1 file changed, 11 insertions(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 3012f7a..5dcc29c 100644
+--- CMakeLists.txt
++++ CMakeLists.txt
+@@ -44,7 +44,17 @@ if(JPEG_FOUND)
+     include_directories(${JPEG_INCLUDE_DIR})
+ endif()
+ 
+-find_package(Exiv2 REQUIRED)
++### 2018-12-30 jzarl
++# When Exiv2 0.26 can be deprecated, FindExiv2.cmake should be removed
++# and only find_package(exiv2) should be used
++find_package(exiv2 CONFIG QUIET)
++if(exiv2_FOUND)
++    # search againg with REQUIRED, so that the feature summary correctly shows exiv as required dependency
++    find_package(exiv2 CONFIG REQUIRED)
++    set(EXIV2_LIBRARIES exiv2lib)
++else()
++    find_package(Exiv2 REQUIRED)
++endif()
+ 
+ find_package(KF5Kipi 5.1.0)
+ set_package_properties(KF5Kipi
+-- 
+cgit v1.1
+From cf4f7645b3c94246a1fcf664f1c865a93ae2b684 Mon Sep 17 00:00:00 2001
+From: Johannes Zarl-Zierl <johannes@zarl-zierl.at>
+Date: Sun, 30 Dec 2018 23:43:14 +0100
+Subject: Fix compilation with exiv2 0.27
+
+---
+ Exif/Info.cpp | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/Exif/Info.cpp b/Exif/Info.cpp
+index be4c88f..9545360 100644
+--- Exif/Info.cpp
++++ Exif/Info.cpp
+@@ -28,7 +28,8 @@
+ #include <QFile>
+ 
+ #include <exiv2/image.hpp>
+-#include <exiv2/exif.hpp>
++#include <exiv2/exv_conf.h>
++#include <exiv2/version.hpp>
+ 
+ using namespace Exif;
+ 
+-- 
+cgit v1.1
+