[Installer] only show packages that are visible in launcher

[will]

visible packages shown in installer should only include:

1) packages that are visible to launcher
2) system packages

[tick]

According to the talk record at 2008 24'th Sep with William:

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Visual packages include:

Applications
Visible modifications in system
Maps
Ringtone
Repositories

System Update :

Only show up in official updates or releases
One and only one if has update

e.g. 2008.9 --> 2008.10

Package naming:

Should be able to give anyname to a package?
desired by initial author?

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That means packages that can be shown is not only those packages on Desktop but those can affect user usage experiences.

What I will do is divide this issue into several steps.
1. Adding alias scheme into packagekit & assassin.

Tags: alias::xxxxx
. prototype done at assassin 254, packagekit need patch

2. adding more status of packages in packagekit.

Adding update.

3. No longer search for system_update. just search for group and dispatch them into correct category.
4. Search system-update first.

"search name" for system upgrade

After having alias scheme, we also can solve some usability problems. for example: qtopia-phone-x11-(I cannot see)
We can alias them in the future.

[tick]

step 1. Done

William, you can think about the alias name of long packages now.
alias name is *one* word

for example you can alias qtopia-phone-x11-taskmanger-application as qt-taskmanager via adding a Tags in the packages.

Tags: alias::qt-taskmanager

[tick]

step 2, 3. Still use get_updates but adding a filter to filter out none tag packages. So finished.

Still keep + Update All, and it will soon be removed.

For system packages I will need modify tasks in org.openmoko.dev.

[tick]

How to create system update package is still TBD.