[Help-smalltalk] more patches went in to converter

[Paolo Bonzini]

I split them quite heavily, so you'll have to fetch them from arch. 
Baseline is that you can now pass arguments to scripts/Convert.st and 
invoke it like this:

gst-convert -fsqueak -c-'-[Ss]queak$' -c-'-platform$' source.st seaside.st

I'm pretty sure you can also use something like 
"Seaside2.8a1-kph.416.mcz#uzip/snapshot/source.st" instead of extracting 
it manually, but didn't test it.

Those -c options allow one to skip/include categories.  There's also -C 
for class.

Paolo