KDE QFileDialog helper: support name filters without parenthesis.
Summary:
The QFileDialog documentation says these are equivalent:
dialog.setNameFilter("All C++ files (*.cpp *.cc *.C *.cxx *.c++)"); dialog.setNameFilter("*.cpp *.cc *.C *.cxx *.c++");
so we should support both syntaxes.
Test Plan: See autotest addition; also tested together with my kdialog port to QFileDialog.
Reviewers: Plasma, apol
Reviewed By: apol
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D6351