[tex-live] TEXMFCNF variable

[Karl Berry]

    Did anyone actually request adding $SELFAUTOLOC?

SELFAUTOLOC entries have been there since day one.  I don't want to
remove them at this late date.  At least not this year.

    The above settings for TEXMFCNF will only work for predictable
    texmf-local paths anyway.

If people want to find texmf.cnf in an arbitrary location, they can set
the TEXMFCNF envvar.  I don't much want to do anything else.

k