Log Message:
Changes 1.3.99:
* Drop support for HP-UX.
* Drop support for Windows 9x and Windows NT.
  Windows 2000 is now required.
* Replace BeOS support by Haiku support.
* Add dvdcss_open_stream() to public API. This allows installing custom
  callback functions for accessing DVD, e.g. over the network.
* dvdcss_error() now returns "const char *" instad of "char *".
* Drop support for MSVC versions before 2010.
* Raw device access now errors out if the device cannot be opened.
* Miscellaneous cleanups to code, documentation, build system.