patch to fix text color in PDF output

[Andrew Hawryluk]

Hi, I've been helping with the LilyPond docs, and I noticed that the
PDF output of TexInfo has a CMYK black that doesn't print as fully
black on home printers. Instead, it renders as a very dark gray
on-screen, and a very dark halftone in print, making the letter forms
look rough.

Attached is a patch which corrects this, and the printed output is
noticeably improved. (The on-screen output is nearly
indistinguishable.)

Andrew

texinfo.tex.diff
Description: Text Data