Update TO-xxx stagger footprints

[evanshultz]

It seems #574 had a few mistakes as I noted at #764.

This PR should correct all footprints. I checked this several times and checked all footprints, but I'm afraid I've gotten bleary-eyed or I didn't catch something in the nearly-indecipherable script that makes them wrong.

The impetus for this was to add the TO-220F-4 footprint missing that I noted at KiCad/kicad-symbols#765. See page 10 at https://www.fairchildsemi.com/datasheets/KA/KA5M0265R.pdf. I made both stagger configurations just for the heck of it.

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[evanshultz]

Script update at pointhi/kicad-footprint-generator#151.

[poeschlr]

The information this is based on was wrong. For some reason i used the pin furthest from the package as the reference for the lead lenght field instead of pin 1 as i originally wrote in the KLC. It might be better to document how it is done right now in the KLC instead of renaming all footprints. (This would allow us to include the lib changes in future bug fix releases of kicad.)
I also suspect that i had my reasons for changing my mind. (My guess is that there are some footprints where lead length does not make sense if it is calculated between pad 1 and nearest body outline)

I am sorry about the additional work this causes.

[evanshultz]

In some cases pin 1 could be under the body, and without a sign (plus/minus) on the Lead field there's no way to know this. Take http://www.ti.com/lit/ds/symlink/lm675.pdf but imagine the stagger pattern is opposite (swap near and far pin stagger). How to handle that? Would this require using the farthest lead from the body, then?

It's fine for me to do the work if we can devise a solid methodology. :)

[poeschlr]

Ah that would explain why i used the farthest pin as reference.
I would in that case really change the KLC to fit our current naming convention.

[poeschlr]

I update the KLC in KiCad/kicad-website#367. This clarifies that the lead length is measured between the body and the pad furthest away.

Could you align the naming to this? (meaning revert the changes to the lead length)
Also note that i left the definition of x pitch unchanged to get the least disruptive change. (So the pitch is therefore defined as the distance between pads of the same row)

[evanshultz]

Yes, I'll get on this. Probably next week.

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[poeschlr]

Is CLA broken? Or did you change your mail address that is connected to github?

[evanshultz]

No change in email address. Not sure what's going on.