Add myself to sizelimit.conf to explicitly acknowledge that, yes, that
was in fact what I meant, and yes, I do mean to commit those big files,
thank you, and yes, I will be careful, and yes I do have my mittens.

Also update the comments in sizelimit.py to give a miniscule hint of a
clue of a pointer of a vague reference to what it is talking about.

Approved by: doceng (implicit)