Remove usage of KDEFrameworkCompilerSettings

As advised by docs and to prevent false error of failing KDEMetaInfoPlatformCheck due to missing metainfo.yaml file. Also corrected ambiguous operator overload which were causing compilation errors.

CMakeLists.txt

@@ -27,7 +27,6 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${ECM_MODULE_PATH})
 include(KDEInstallDirs)
 include(KDECMakeSettings)
 include(KDECompilerSettings NO_POLICY_SCOPE)
-include(KDEFrameworkCompilerSettings NO_POLICY_SCOPE)
 include(ECMOptionalAddSubdirectory)
 include(ECMInstallIcons)
 include(ECMSetupVersion)

src/ProcessInfo.cpp

@@ -153,7 +153,7 @@ QString ProcessInfo::formatShortDir(const QString &input) const
     for (auto it = parts.crbegin(), endIt = parts.crend(); it != endIt; ++it) {
         const QString &part = *it;
         if (dirNamesToShorten.contains(part)) {
-            result.prepend(QDir::separator() + part[0]);
+            result.prepend(QDir::separator() + static_cast<QString>(part[0]));
         } else {
             result.prepend(part);
             break;