Accumulating Debugger.Perspective.LLDB.* settings

With the perspectives change, everytime I debug an application Qt Creator accumulates another block of [Debugger.Perspective.LLDB.<app_name>] settings in the QtCreator.ini file.

This will grow the .ini file over time with no way to shrink it back again.

• Maybe these settings should better be saved in the session
• We need some logic for removing them again. Maybe by associating them with a project and removing them when the project is closed?
• Or maybe these individual debug session settings should not be persistent at all.