Logging: Change 'rules' section name to 'Rules'

This is more consistent with e.g. qt.conf, where section names also
start with an upper case character.

Change-Id: I9ddaf72baeb9334d081807412512242d5d46cbbf
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

src/corelib/io/qloggingcategory.cpp

@@ -109,7 +109,7 @@ Q_GLOBAL_STATIC_WITH_ARGS(QLoggingCategory, qtDefaultCategory,
     apply to a category/type, the rule that comes later is applied.
 
     Rules can be set via \l setFilterRules(). Since Qt 5.3 logging rules
-    are also automatically loaded from the \c [rules] section of a logging
+    are also automatically loaded from the \c [Rules] section of a logging
     configuration file. Such configuration files are looked up in the QtProject
     configuration directory, or explicitly set in a \c QT_LOGGING_CONF
     environment variable.

src/corelib/io/qloggingregistry.cpp

@@ -203,7 +203,7 @@ void QLoggingSettingsParser::setContent(QTextStream &stream)
             continue;
         }
 
-        if (_section == QLatin1String("rules")) {
+        if (_section == QLatin1String("Rules")) {
             int equalPos = line.indexOf(QLatin1Char('='));
             if ((equalPos != -1)
                     && (line.lastIndexOf(QLatin1Char('=')) == equalPos)) {
@@ -298,7 +298,7 @@ void QLoggingRegistry::unregisterCategory(QLoggingCategory *cat)
 void QLoggingRegistry::setApiRules(const QString &content)
 {
     QLoggingSettingsParser parser;
-    parser.setSection(QStringLiteral("rules"));
+    parser.setSection(QStringLiteral("Rules"));
     parser.setContent(content);
 
     QMutexLocker locker(&registryMutex);

tests/auto/corelib/io/qloggingregistry/qtlogging.ini

@@ -1,2 +1,2 @@
-[rules]
+[Rules]
 *=true

tests/auto/corelib/io/qloggingregistry/tst_qloggingregistry.cpp

@@ -63,16 +63,16 @@ private slots:
     {
         //
         // Logging configuration can be described
-        // in an .ini file. [rules] is the
+        // in an .ini file. [Rules] is the
         // default category, and optional ...
         //
         QLoggingSettingsParser parser;
-        parser.setContent("[rules]\n"
+        parser.setContent("[Rules]\n"
                           "default=false\n"
                           "default=true");
         QCOMPARE(parser.rules().size(), 2);
 
-        parser.setContent("[rules]\n"
+        parser.setContent("[Rules]\n"
                           "default=false");
         QCOMPARE(parser.rules().size(), 1);
 
@@ -115,7 +115,7 @@ private slots:
         QFile file(dir.absoluteFilePath("qtlogging.ini"));
         QVERIFY(file.open(QFile::WriteOnly | QFile::Text));
         QTextStream out(&file);
-        out << "[rules]\n";
+        out << "[Rules]\n";
         out << "Digia.*=false\n";
         file.close();
 
@@ -153,7 +153,7 @@ private slots:
 
         // set Config rule
         QLoggingSettingsParser parser;
-        parser.setContent("[rules]\nDigia.*=false");
+        parser.setContent("[Rules]\nDigia.*=false");
         registry->configRules=parser.rules();
         registry->updateRules();