Cleanup of the code for the FTP client

[Konamiman]

• Convert macros to sjasm syntax
• Convert tabs to spaces
• Use "h" suffix instead of "#" prefix for hex numbers
• Use regular code instead of macros for the commands table
  (those macros only worked on Compass)
• Use ASCII code instead of literal "" inside of strings
  (the lastest isn't supported by Sjasm)
• Translate some comments from Spanish to English
• Convert multi-register PUSH and POP to single-register
• Get rid of the silly jump macros

It can now be assembled with Sjasm without using the -C switch.