Add plasmashell --replace
Summary:
Calls the existing quit signal on a running plasma then tries to start
in the normal way.
It's meant partly to make my own development workflow a bit easier, but
also to make it one less line on bugzilla when I want people to give me
debug output.
Test Plan:
Ran with existing plasma running
Ran without an existing plasma running
Reviewers: Plasma, apol
Reviewed By: apol
Subscribers: apol, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D12092