Log Message:
devel/smake: Update to 1.3nb6

Based on Release 2019-10-07.

Changelog
=========
- configure: Some shells report a syntax error with "< file (cmd)"
  and need the redirection statement to be *after* the command. Our
  changes to support the V7 shell by adding round braces caused ash
  variants like "dash" to fail.

  Thanks to Harald van Dijk for reporting

- cont/cc-config.sh: canged some :>some-file statements into
  (:)>some-file. they have meen missed when introducing work arounds
  for the V7 Shell on Ultrix that does not support I/O redirection
  for builtin commands.

  Thanks to Robert Clausecker for reporting

- smake: The error message for failed shell commands has been modified
  to "Code %d (%s) from command line..." in order to cause less confusion
  with the text printed by smake.

  The text for %s is the strerror() result for the exit code if
  applicable.

  Thanks to Robert Clausecker for reporting