D29751: KWIN_DISABLE_SHORTCUTS: allow disabling registering kwin shortcuts

apol created this revision.
apol added a reviewer: KWin.
Herald added a project: KWin.
Herald added a subscriber: kwin.
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REVISION SUMMARY
  When running kwin nested in another session, the nested kwin will hijack the
  shortcuts of the parent's. This makes it impossible to e.g. alt+tab after running
  a nested session.

TEST PLAN
  Can alt+tab during and after running a nested session.

REPOSITORY
  R108 KWin

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D29751

AFFECTED FILES
  workspace.cpp

To: apol, #kwin
Cc: kwin, Orage, cacarry, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus, fbampaloukas, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, romangg, jensreuterberg, abetts, sebas, apol, ahiemstra, mart