Upgrade ECM and KF5 version requirements for 5.23.0 release.

6934d54417 added an optional dependency
on karchive. This also means that it doesn't merely depend on Qt and a
small number of third-party libs anymore and needs to moved to tier 2.

REVIEW: 127015

CMakeLists.txt

@@ -3,7 +3,7 @@ cmake_minimum_required(VERSION 2.8.12)
 project(KImageFormats)
 
 include(FeatureSummary)
-find_package(ECM 5.19.0  NO_MODULE)
+find_package(ECM 5.23.0  NO_MODULE)
 set_package_properties(ECM PROPERTIES TYPE REQUIRED DESCRIPTION "Extra CMake Modules." URL "https://projects.kde.org/projects/kdesupport/extra-cmake-modules")
 feature_summary(WHAT REQUIRED_PACKAGES_NOT_FOUND FATAL_ON_MISSING_REQUIRED_PACKAGES)
 
@@ -17,7 +17,7 @@ include(KDECMakeSettings)
 
 include(CheckIncludeFiles)
 
-set(REQUIRED_QT_VERSION 5.3.0)
+set(REQUIRED_QT_VERSION 5.4.0)
 find_package(Qt5Gui ${REQUIRED_QT_VERSION} REQUIRED NO_MODULE)
 
 find_package(KF5Archive)

metainfo.yaml

@@ -1,6 +1,6 @@
 maintainer: alexmerry
 description: Image format plugins for Qt
-tier: 1
+tier: 2
 type: functional
 platforms:
     - name: Linux
@@ -10,3 +10,7 @@ platforms:
 portingAid: false
 deprecated: false
 release: true
+
+public_lib: true
+group: Frameworks
+subgroup: Tier 2