0.8.5b

After more work DOG is becoming more stable, and the external commands
are now richer, with more feature.

Fixes & changes

DOG

• Fixed dogfile arg parsing and variable initialization.
• Fixed command line reading so that DOS provided line editing works (F3).
• Removed util shorthands since they are now external commands (HH, HD & WI).
• EH: Added -n flag to not format.
• MD: Added -p flag to make the whole path if any part doesn't exist.
• TN: New internal command displays the canonical (TRUENAME) of a file

External commands

• DS: New command contributed by K. Hari Kiran
• SZ: New -r and -z flags to recurse into subdirectories and to show human-
  readable file sizes.
• VR: Even more accurate version detection and also get kernel string from
  DR-DOS.
• PP: A new command for setting and getting the PROMPT. It's written as
  a DOGFile. It's treated as an external command in documentation.
  PP is also a demo on what kind of programs can be written in DOG.
• PT: A new command, like PP, but shows and sets the PATH. Also written in DOG.
• LS: New flags & features:
  • -p enables a page break for each screen full
  • -s sort output according to different attributes
  • -c use color rules to colorize files
  • -x show file total size and file & dir count
• CM: New command to change file attributes (CHMOD).
• RM: New flag -a to also attempt removing read-only, system, and hidden files.
• HH: Migrated the HELP utility to external command HH.
• HD: Migrated the HEAD utility to external command HD.
• WI: Migrated the WHICH utility to external command WI. Also updated flags
  to be parsed first.

Utilities

• Moved the HELP, HEAD & WHICH to external commands. There are no more
  non-development utilities.