[NTG-context] installer

[Hans Hagen via ntg-context <ntg-context@ntg.nl>]

Hi,

The mtx-install-tikz is now mtx-install-modules, so

   mtxrun --script install-modules

will show what to do.  By looking at

   mtxrun --script install-modules --list

some might be inspired to adapt then name of the archive to more fit the 
t-* scheme. Willi's updated module wins the price for the lonbgest name 
and I didn't want to impose on users to key that one in.

So:

- which ones are missing
- which ones are obsolete
- which modules deserve better names
- do we need more features
- should we push to and fetch from ctan instead (in the future)

The outlier is tikz where we also need to wipe files (maybe more needs 
to be wiped).

I had to adapt some 'unzip archives' code because two modules were kind 
of different (delayed compression data) and I hope it doesn't affect the 
regular installer (as I couldn't test that here) but we'll notice that 
soon enough.

The lazy user can run

   mtxrun --script install-modules --install --all

but best is to go lightweight (as there are some modules related to 
typescripts that might be outdates).

Someone (not me) has to adapt the wiki.

Hans

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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