Port endl to \n as it's qt namespaced.

Port "dec"/"hex" as it's Qt namespaced too

src/kconfig_compiler/KConfigHeaderGenerator.cpp

@@ -255,7 +255,14 @@ void KConfigHeaderGenerator::createSignals()
     // a last comma, as it's valid c++.
     for (int i = 0, end = parseResult.signalList.size(); i < end; i++) {
         auto signal = parseResult.signalList.at(i);
-        stream() << whitespace() << "  " << signalEnumName(signal.name) << " = 0x" << hex << val;
+        stream() << whitespace() << "  " << signalEnumName(signal.name) << " = 0x"
+                 <<
+            #if (QT_VERSION < QT_VERSION_CHECK(5, 15, 0))
+                    hex
+            #else
+                    Qt::hex
+            #endif
+                 << val;
         if (i != end-1) {
             stream() << ",\n";
         }
@@ -263,7 +270,14 @@ void KConfigHeaderGenerator::createSignals()
         val <<= 1;
     }
     stream() << '\n';
-    stream() << whitespace() << "};" << dec << "\n\n";
+    stream() << whitespace() << "};"
+             <<
+            #if (QT_VERSION < QT_VERSION_CHECK(5, 15, 0))
+                    dec
+            #else
+                    Qt::dec
+            #endif
+             << "\n\n";
 
     stream() << "  Q_SIGNALS:";
     for (const Signal &signal : parseResult.signalList) {
@@ -495,7 +509,7 @@ void KConfigHeaderGenerator::createItemAcessors(const CfgEntry *entry, const QSt
         stream() << ";\n";
     }
 
-    stream() <<endl;
+    stream() << '\n';
 }
 
 void KConfigHeaderGenerator::createDefaultValueMember(const CfgEntry *entry)

src/kconfig_compiler/KConfigSourceGenerator.cpp

@@ -44,7 +44,7 @@ void KConfigSourceGenerator::start()
 
     if (!cfg().nameSpace.isEmpty()) {
         stream() << "using namespace " << cfg().nameSpace << ";";
-        stream() << endl << '\n';
+        stream() << "\n\n";
     }
 
     createPrivateDPointerImplementation();
@@ -120,7 +120,7 @@ void KConfigSourceGenerator::createPrivateDPointerImplementation()
         }
         stream() << ";\n";
     }
-    stream() << endl << "    // items\n";
+    stream() << "\n    // items\n";
 
     // Create Items.
     for (auto *entry : parseResult.entries) {
@@ -139,7 +139,7 @@ void KConfigSourceGenerator::createPrivateDPointerImplementation()
         stream() << "    uint " << varName(QStringLiteral("settingsChanged"), cfg()) << ";\n";
     }
 
-    stream() << "};" << endl << '\n';
+    stream() << "};\n\n";
     endNamespaces();
 }
 
@@ -173,10 +173,10 @@ void KConfigSourceGenerator::createSingletonImplementation()
         stream() << "  if (!s_global" << cfg().className << "()->q) {\n";
         stream() << "    new " << cfg().className << ';' << '\n';
         stream() << "    s_global" << cfg().className << "()->q->read();\n";
-        stream() << "  }" << endl << '\n';
+        stream() << "  }\n\n";
     }
     stream() << "  return s_global" << cfg().className << "()->q;\n";
-    stream() << "}" << endl << '\n';
+    stream() << "}\n\n";
 
     if (parseResult.cfgFileNameArg) {
         auto instance = [this] (const QString &type, const QString &arg, bool isString) {
@@ -194,7 +194,7 @@ void KConfigSourceGenerator::createSingletonImplementation()
             }
             stream() << ");\n";
             stream() << "  s_global" << cfg().className << "()->q->read();\n";
-            stream() << "}" << endl << '\n';
+            stream() << "}\n\n";
         };
         instance(QStringLiteral("const QString&"), QStringLiteral("cfgfilename"), true);
         instance(QStringLiteral("KSharedConfig::Ptr"), QStringLiteral("config"), false);
@@ -388,7 +388,7 @@ void KConfigSourceGenerator::handleCurrentGroupChange(const CfgEntry *entry)
 
     mCurrentGroup = entry->group;
     stream() << "  setCurrentGroup( " << paramString(mCurrentGroup, parseResult.parameters) << " );";
-    stream() << endl << '\n';
+    stream() << "\n\n";
 }
 
 void KConfigSourceGenerator::doConstructor()