QObject: Add Q_OBJECT macro where necessary

lib/database_model.cpp

@@ -71,7 +71,7 @@ QSqlError database_model::initSqlDB()
 	}
 
 	if (i != MAX_SCHEMAS)
-		throw errorEx(tr("Failed to update the database schema to the current version"));
+		throw errorEx(QObject::tr("Failed to update the database schema to the current version"));
 
 	TransCommit();
 	return QSqlError();

lib/pkcs11_lib.h

@@ -18,6 +18,8 @@
 
 class pkcs11_lib : public QLibrary
 {
+	Q_OBJECT
+
     private:
 	CK_FUNCTION_LIST *p11;
 	QString file, load_error;

lib/xfile.h

@@ -30,6 +30,8 @@ typedef int mode_t;
 
 class XFile : public QFile
 {
+	Q_OBJECT
+
 	private:
 		FILE *filp;
 		BIO *b;

widgets/XcaWarning.h

@@ -22,6 +22,8 @@ class xcaWarning: public QMessageBox
 
 class xcaWarningGui : public QObject, public xcaWarning_i
 {
+	Q_OBJECT
+
     public:
 	int showBox(const QString &txt, QMessageBox::Icon icn,
 			QMessageBox::StandardButtons b);