hygiene, compare signed size_t's with signed size_t's in yuck-scmver.c's bzr_version()

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
hygiene, replace unsequenced check by a sequenced equivalent, in usagep()

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
Merge branch 'code/hygiene'

* code/hygiene:
  hygiene, replace unsequenced check by a sequenced equivalent, in usagep()
  hygiene, compare signed size_t's with signed size_t's in yuck-scmver.c's bzr_version()