RDOS - Beta version ready

The beta version of rdos is ready.

Features:

• "Boot" everything from a clean Tandy.  This will load the "RLOAD" program which will let you load all the other programs.
• Load, Save data files (sorry, the BASIC doesn't let me load tokenized BASIC files).  You can still load programs as text files, then "LOAD XXX.DO in the BASIC interpreter.
• List files on the drive.
• Change directories on the drive.
• Rename and delete files on the drive.
• You can "reference" a file on the drive.  Then you can LOAD "COM:98N1D the file at the touch of a button.
• Also, file seek is supported plus the reading of a number of bytes (writing was already supported).  This will allow you to write a program that uses the drive as "virtual memory".

The project has all the clients written and fairly well tested.  Also examples for the file seek feature.

I haven't "beat the heck out of it" yet as far as use.   It seems to work just fine for the limited use and testing that I did.  So I'm pleased right now.