Add some Molex KK-396 series footprints

Add some Molex KK-396 series footprints

• serie 41792 based on 41791 script
• serie 5273, based on 41791 script

Converted to v6 format

• Provide a URL to a datasheet for the footprint(s) you are contributing

• https://www.molex.com/pdm_docs/sd/026605050_sd.pdf
• https://www.molex.com/pdm_docs/sd/009652028_sd.pdf

• An example screenshot image is very helpful
• If there are matching symbol or 3D model pull requests, provide link(s) as appropriate

• kicad-footprint-generator!602 (closed)
• kicad-footprint-generator!603 (closed)

• Check the output of the Travis automated check scripts - fix any errors as required
• Give a reason behind any intentional library convention rule violation.

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