chore, update yuck to get the auto-dashdash feature

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, provide unpgbrk

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, even though COMMAND isn't called on empty chunks ...

write a separator to the output stream.

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, provide -s|--separator feature

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
test, provide regressions for unpgbrk tool

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, check that a command is given to unpgbrk(1)

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, don't write page break after last chunk

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Merge branch 'tool/unpgbrk'

* tool/unpgbrk:
  minor, don't write page break after last chunk
  minor, check that a command is given to unpgbrk(1)
  test, provide regressions for unpgbrk tool
  minor, provide -s|--separator feature
  minor, even though COMMAND isn't called on empty chunks ...
  minor, provide unpgbrk
  chore, update yuck to get the auto-dashdash feature