stealth update of packages

[Robin Fairbairns]

1. i recently realised that our mirror of macros/plain/base wasn't
delivering the correct stuff (don's latest updates went into
systems/knuth/dist/lib and not to the "canonical" place on ctan for the
files).

i've therefore corrected that; macros/plain/base now contains don's
latest release.

see http://www.tex.ac.uk/tex-archive/help/Catalogue/entries/plain.html

2. version 3.0 of the amsfonts bundle has been released.  this includes
revised versions of the "ams" fonts, and an update of the long-
established y&y and blue sky research versions of the computer modern
fonts (for which the ams holds the copyright).

note that rather little of the amsfonts documentation has been updated
for the new version; the ams are working on that.

see http://www.tex.ac.uk/tex-archive/help/Catalogue/entries/amsfonts.html

that's quite enough excitement for one day.  now i'll get back to _real_
work.

Robin Fairbairns

For the CTAN team