Bug#850163: xpdf fails to render Japanese text with various pdf files

[Masanori Goto <gotom@debian.org>]

Package: xpdf
Version: 3.04-3

xpdf often fails to render pdf documents using Japanese fonts. This
issue exists on Jessie, Stretch and the latest Sid. xpdf-i on Wheezy
worked well as expected.  Here's the procedure how to reproduce:

  > wget http://gum.debian.or.jp/2012/download/debian-gum-presentation.nojima.pdf
  ..
  > xpdf debian-gum-presentation.nojima.pdf
  Syntax Error: Missing language pack for 'Adobe-Japan1' mapping
  Syntax Error: Missing language pack for 'Adobe-Japan1' mapping
  Syntax Error: Unknown font tag 'F3'
  Syntax Error (4879): No font in show/space
  Syntax Error: Unknown font tag 'F3'
  Syntax Error (4917): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (4972): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (5005): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (5058): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (5074): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (5088): No font in show/space
  Syntax Error: Missing language pack for 'Adobe-Japan1' mapping
  Syntax Error: Missing language pack for 'Adobe-Japan1' mapping
  Syntax Error: Unknown font tag 'F3'
  Syntax Error (4879): No font in show/space
  Syntax Error: Unknown font tag 'F3'
  Syntax Error (4917): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (4972): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (5005): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (5058): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (5074): No font in show/space
  Syntax Error: Unknown font tag 'F5'
  Syntax Error (5088): No font in show/space