Downloading:
  http://www.foolabs.com/xpdf/download.html

Files in xpdf directory:
  the files of the xpdf distribution, except
    ltk misc/hello.pdf

Replaced files:
  Makefile.in
  configure.in
  xpdf/Makefile.in
  goo/Makefile.in

Added files:
  libxpdf.ac
