This worked as expected with Qt 4.8.
The Application About menu (and the Hide and Quit menus) displays "About <exec_name>" instead of "About <bundle_name>". The <bundle_name> is specified in the Info.plist file:
The bundle name is used as application menu name.
The first screen shout: Menu with Qt 5.3.2
The second screen shout: Menu with Qt 4.8