Provide an update-in-place installer about installer HOT 4 CLOSED

@dougbreaux

Please consider providing installers (I'm on Windows) that can update an existing JDK in place so that we don't have to manually install a new fix level, point applications at that new location, and manually uninstall the prior fix level.

New installer produce since 19 mars handle this ( #74 )
New Windows installer remove old (same java-version/arch/jvm) if newer is installed.
If you rely on PATH for pointing to java.exe or JAVA_HOME it will be transparent.
If you rely on folder, you must update your config as each install use a versionned folder name.
It was not the case for installer 8u202.
Starting with April installer (8u212 and 11.0.3 ) handle it properly, so the next installer in 3 month will replace 8u212 or 11.0.3 (for same arch/jvm)

which also didn't even have the "-openj9" in the name either

Yes it was not the case in the past but the jvm name hotspot/openj9 will always be included in the folder name
see #73

Further, having some way to even know there is an updated version available would be nice too. But I could see that being an entirely different feature.

This would be probably handled by #4

from installer.

@douph1 My understanding is that the very latest installers now do this, is that correct?

@dougbreaux And yes the update notification will need to be an opt-in feature that we develop :-).

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@dougbreaux Given we have a separate issue for the update notification are you OK for this to be closed?

from installer.

Yeah, sounds like it's the next version where I'll see the old uninstalled and JAVA_HOME updated, so that sounds good. Thanks.

from installer.