a8baf4a2a2
A new envrionment variable GNOME_SHELL_ENABLE_CLEANUP is added which causes us to attempt freeing global data. The reason this isn't enabled by default is that it's a waste of time at best, and at worst in corner cases could cause crashes which would fill up crash databases. Better to leave it as a developer-only tool. Start stubbing out some cleanup in ShellGlobal. https://bugzilla.gnome.org/show_bug.cgi?id=649517