Adding logging rule qtc.*.info=false to disable output by default

I also added the qtc prefix to all logging categories.

Task-number: QTCREATORBUG-16767
Change-Id: I04214dba9912fe6c669f10566582d6009b5d75f0
Reviewed-by: Robert Loehning <robert.loehning@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/app/main.cpp

@@ -309,7 +309,8 @@ int main(int argc, char **argv)
 {
     const char *highDpiEnvironmentVariable = setHighDpiEnvironmentVariable();
 
-    QLoggingCategory::setFilterRules(QLatin1String("qtc.*.debug=false"));
+    QLoggingCategory::setFilterRules(QLatin1String("qtc.*.debug=false\nqtc.*.info=false"));
+
 #ifdef Q_OS_MAC
     // increase the number of file that can be opened in Qt Creator.
     struct rlimit rl;

src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.cpp

@@ -42,7 +42,7 @@
 #include <QPen>
 #include <qdebug.h>
 
-static Q_LOGGING_CATEGORY(itemlibraryPopulate, "itemlibrary.populate")
+static Q_LOGGING_CATEGORY(itemlibraryPopulate, "qtc.itemlibrary.populate")
 
 static bool inline registerItemLibrarySortedModel() {
     qmlRegisterType<QmlDesigner::ItemLibrarySectionModel>();

src/plugins/qmldesigner/designercore/instances/puppetcreator.cpp

@@ -53,8 +53,8 @@
 #include <QMessageBox>
 #include <QThread>
 
-static Q_LOGGING_CATEGORY(puppetStart, "puppet.start")
-static Q_LOGGING_CATEGORY(puppetBuild, "puppet.build")
+static Q_LOGGING_CATEGORY(puppetStart, "qtc.puppet.start")
+static Q_LOGGING_CATEGORY(puppetBuild, "qtc.puppet.build")
 
 namespace QmlDesigner {
 

src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp

@@ -59,7 +59,7 @@
 using namespace LanguageUtils;
 using namespace QmlJS;
 
-static Q_LOGGING_CATEGORY(rewriterBenchmark, "rewriter.load")
+static Q_LOGGING_CATEGORY(rewriterBenchmark, "qtc.rewriter.load")
 
 namespace {