Pharo Issue Tracker - FogBugz (Case [Issue]20004) Kernel - SnapshotDone should be not announced on every image startup

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	Denis Kudryashov opened Case 20004: SnapshotDone should be not announced on every image startup and assigned it to Everyone: Bug in Kernel: 1. Pharo Image • You are subscribed to this case

Now we have logic in SessionManager:
<code>
SessionManager>>snapshot: save andQuit: quit
| isImageStarting snapshotResult |
ChangesLog default logSnapshot: save andQuit: quit.

self currentSession stop: quit. "Image not usable from here until the session is restarted!"
save
ifTrue: [
snapshotResult := Smalltalk snapshotPrimitive. "<-- PC frozen here on image file"
isImageStarting := snapshotResult == true.
SystemAnnouncer uniqueInstance snapshotDone: isImageStarting ]
ifFalse: [ isImageStarting := false ].
(quit and: [ isImageStarting not ])
ifTrue: [ Smalltalk quitPrimitive ].

"create a new session object if we're booting"
isImageStarting ifTrue: [ self installNewSession ].

self currentSession start: isImageStarting.
snapshotResult
ifNil: [ self error: 'Failed to write image file (disk full?)' ].

"We return the resuming state, which may be useful for users to know the state of the image"
^ isImageStarting
<code>
When we save image just after snapshot system announce event:
<code>
SystemAnnouncer uniqueInstance snapshotDone: isImageStarting
</code>
Which means this event will be announced at every startup. I think it is wrong. And it should be announced only on working image

	Priority: 5 – Fix If Time		Status: Work Needed
	Assigned to: Everyone		Milestone: Pharo6.0

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