AFM file problems

[Mats Bengtsson]

I tracked down a problem Jérémie had found on his 
Windows installation, where the alignment of 
instrument names in the staff margin was completely
off. In the end, it boiled down to the following 
problems:

- The unit of length used in the Lilypond AFM interpreter
  and in the feta*.afm files differs from that used in the
  standard cmr*.afm files (which are included in the standard
  MiKTeX distribution, though not in the minimal distribution
  at ftp.lilypond.org). I thought we fixed this back in 1998
  or 1999 but either the problem has returned or we didn't
  get it right at that time.

- The soft link from /usr/share/texmf/ to MiKTeX set in 
  post-miktex.sh isn't really necessary, especially not
  now that we have a mktextfm wrapper script, since we
  set all necessary paths anyway. Removing the link solves
  Jérémie's problem since then Lilypond will find the 
  cm*.tfm files in lilypond/share/lilypond/tfm/ instead
  of the cm*.afm files in the MiKTeX file tree.

  I have always used the Windows Lilypond installation 
  together with a preinstalled MiKTeX, which means I've
  never had this soft link but haven't experienced any
  extra problems.

   /Mats