change section delimiters in log for OpenBSD

Dependencies

• [2] KKMFQDR4 editing source code from within the app
• [3] CEDTFKFD delete some dead code
• [4] ME7WBLF5 bugfix: log filenames can have 2 formats
• [5] ICFNWHOL create a place for graphical log handlers

Change contents

• replacement in log_browser.lua at line 45
  [2.193544]→[2.193544:193590](∅→∅)
  − elseif line.data:match('\u{250c}') then
  [2.193544]

  [2.193590]
  + elseif line.data:match('%[ u250c') then
• replacement in log_browser.lua at line 47
  [2.193682]→[2.193682:193746](∅→∅)
  − local section_name = line.data:match('\u{250c}%s*(.*)')
  [2.193682]

  [2.193746]
  + local section_name = line.data:match('u250c%s*(.*)')
• replacement in log_browser.lua at line 52
  [2.193902]→[2.193902:194012](∅→∅)
  − elseif line.data:match('\u{2518}') then

  − local section_name = line.data:match('\u{2518}%s*(.*)')
  [2.193902]

  [2.194012]
  + elseif line.data:match('%] u2518') then

  + local section_name = line.data:match('] u2518%s*(.*)')
• replacement in log.lua at line 17
  [2.203712]→[2.203712:203757](∅→∅)
  − log(stack_frame_index, '\u{250c} ' .. name)
  [2.203712]

  [2.203757]
  + -- I'd like to use the unicode character \u{250c} here, but it doesn't work

  + -- in OpenBSD.

  + log(stack_frame_index, '[ u250c ' .. name)
• replacement in log.lua at line 25
  [2.203866]→[2.203866:203911](∅→∅)
  − log(stack_frame_index, '\u{2518} ' .. name)
  [2.203866]

  [2.203911]
  + -- I'd like to use the unicode character \u{2518} here, but it doesn't work

  + -- in OpenBSD.

  + log(stack_frame_index, '] u2518 ' .. name)