[metapost] mpman: title page

[Stephan Hennig]

Karl Berry schrieb:

> P.S. \logo was undefined in last night's run of mpman.tex.  Didn't check
> if it's already been fixed, sorry ...

I've replaced the manual definitions by package mflogo that defines \MF
and \MP for the logos.  As a side effect more logo fonts are now used in
the manual, presumably more different optical sizes (which is not wrong,
IMHO).

Best regards,
Stephan Hennig