Rename the QmakeRunConfiguration to DesktopQmakeRunConfiguration

Also rename the related factory and config widget.

This was necessary since QmakeRunConfigurationFactory was already
taken by the base class.

Change-Id: I37875935101b7560ad64c8a8c27d821c9810b387
Reviewed-by: hjk <hjk121@nokiamail.com>
Qt4ProjectManager -> QmakeProjectManager renaming in a comment

Change-Id: I311768d2593ebeacdf69b8b2f26753addbf87b37
Reviewed-by: hjk <hjk121@nokiamail.com>