Remove Qt version checks.

Qt 5.3 is the minimum requirement these days. Remove all fallback code
from sources and project files.

Change-Id: If6188a471197acadda4d6baee71804ba1a8026c6
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/libs/qmljs/qmljsinterpreter.cpp

@@ -248,13 +248,8 @@ CppComponentValue::CppComponentValue(FakeMetaObject::ConstPtr metaObject, const
 
 CppComponentValue::~CppComponentValue()
 {
-#if QT_VERSION >= 0x050000
     delete m_metaSignatures.load();
     delete m_signalScopes.load();
-#else
-    delete m_metaSignatures;
-    delete m_signalScopes;
-#endif
 }
 
 static QString generatedSlotName(const QString &base)
@@ -292,11 +287,7 @@ void CppComponentValue::processMembers(MemberProcessor *processor) const
     QSet<QString> explicitSignals;
 
     // make MetaFunction instances lazily when first needed
-#if QT_VERSION >= 0x050000
     QList<const Value *> *signatures = m_metaSignatures.load();
-#else
-    QList<const Value *> *signatures = m_metaSignatures;
-#endif
     if (!signatures) {
         signatures = new QList<const Value *>;
         signatures->reserve(m_metaObject->methodCount());
@@ -304,11 +295,7 @@ void CppComponentValue::processMembers(MemberProcessor *processor) const
             signatures->append(new Internal::MetaFunction(m_metaObject->method(index), valueOwner()));
         if (!m_metaSignatures.testAndSetOrdered(0, signatures)) {
             delete signatures;
-#if QT_VERSION >= 0x050000
             signatures = m_metaSignatures.load();
-#else
-            signatures = m_metaSignatures;
-#endif
         }
     }
 
@@ -536,11 +523,7 @@ const QmlEnumValue *CppComponentValue::getEnumValue(const QString &typeName, con
 
 const ObjectValue *CppComponentValue::signalScope(const QString &signalName) const
 {
-#if QT_VERSION >= 0x050000
     QHash<QString, const ObjectValue *> *scopes = m_signalScopes.load();
-#else
-    QHash<QString, const ObjectValue *> *scopes = m_signalScopes;
-#endif
     if (!scopes) {
         scopes = new QHash<QString, const ObjectValue *>;
         // usually not all methods are signals
@@ -566,11 +549,7 @@ const ObjectValue *CppComponentValue::signalScope(const QString &signalName) con
         }
         if (!m_signalScopes.testAndSetOrdered(0, scopes)) {
             delete scopes;
-#if QT_VERSION >= 0x050000
             scopes = m_signalScopes.load();
-#else
-            scopes = m_signalScopes;
-#endif
         }
     }
 

src/libs/qmljs/qmljsmodelmanagerinterface.cpp

@@ -120,10 +120,8 @@ ModelManagerInterface::ModelManagerInterface(QObject *parent)
 
     m_defaultProjectInfo.qtImportsPath = QFileInfo(
                 QLibraryInfo::location(QLibraryInfo::ImportsPath)).canonicalFilePath();
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
     m_defaultProjectInfo.qtQmlPath = QFileInfo(
                 QLibraryInfo::location(QLibraryInfo::Qml2ImportsPath)).canonicalFilePath();
-#endif
 
     m_defaultImportPaths << environmentImportPaths();
     updateImportPaths();

src/libs/qmljs/qmljsplugindumper.cpp

@@ -262,11 +262,7 @@ static void printParseWarnings(const QString &libraryPath, const QString &warnin
 static QString qmlPluginDumpErrorMessage(QProcess *process)
 {
     QString errorMessage;
-#if QT_VERSION >= 0x050000
     const QString binary = QDir::toNativeSeparators(process->program());
-#else
-    const QString binary = QLatin1String("qmlplugindump");
-#endif
     switch (process->error()) {
     case QProcess::FailedToStart:
         errorMessage = PluginDumper::tr("\"%1\" failed to start: %2").arg(binary, process->errorString());
@@ -286,9 +282,7 @@ static QString qmlPluginDumpErrorMessage(QProcess *process)
             errorMessage = PluginDumper::tr("\"%1\" returned exit code %2.").arg(binary).arg(process->exitCode());
         break;
     }
-#if QT_VERSION >= 0x050000
     errorMessage += QLatin1Char('\n') + PluginDumper::tr("Arguments: %1").arg(process->arguments().join(QLatin1Char(' ')));
-#endif
     if (process->error() != QProcess::FailedToStart) {
         const QString stdErr = QString::fromLocal8Bit(process->readAllStandardError());
         if (!stdErr.isEmpty()) {