DAPHNE v0.99.6b

NOTE : this release is primarily to address the most frequent problems that
Daphne v0.99.6 users have been experiencing.  In other words, it is mainly a
bug fix release, with no new features.  The next version of
Daphne ('cvs version') continues to be developed.

- all strcpy and strcat's in ldp-vldp.cpp replaced with safer versions that
cannot buffer overflow
- error messages relating to erroneous framefiles have been improved to ease
troubleshooting
- command-line argument size has been increased to 320 characters from 80.
This allows people to run daphne from within many nested directories, or from
within directories with long names
- a "-nojoystick" option has been added to prevent daphne from using a
joystick if desired
- parallel port support for win2k/winxp is now built-in (an external program
such as directio or allowio is no longer needed)
- error messages about rom loading failures have been made more verbose to
ease troubleshooting