fix support for absolute paths in Windows

Dependencies

• [2] NFI42KGX more correct absolute path detection
• [*] KKMFQDR4 editing source code from within the app
• [*] VHQCNMAR several more modules

Change contents

• edit in source_file.lua at line 209
  [2.255]

  [2.255]
  + if path:sub(2,2) == ':' then return true end -- DOS drive letter followed by volume separator
• edit in file.lua at line 190
  [2.1048]

  [2.1048]
  + if path:sub(2,2) == ':' then return true end -- DOS drive letter followed by volume separator