Merge branch 'next'

* next:
  chore, add help2man to travis ci requisites
  chore, kick old hand-crafted strerror.1
  doc, build man page strerror(1) via help2man with examples from the genh2m.sh script
  chore, check for help2man through AM_MISSING_PROG
  minor, provide simple shell script to turn example command lines into [EXAMPLES] for inclusion in the man page
  doc, update README.md to reflect newly featured -v|--verbose
  minor, support -v|--verbose