Merge branch 'next'

* next:
  doc, add FAQ about foreign language bindings
  chore, hygiene, use string unconst'er and nprint() helper to print events in pimmel-moni
  chore, hygiene, use string unconst'er and print() helper to write results of sub_cb() in print-wait
  chore, provide simple string unconst'er through transparent unions
  chore, PEBKAC, mention all .so files installed in spec file
  fix, PEBKAC, spell the name of the pc file right
  chore, PEBKAC, add description for devel package
  chore, add rpm rule to Makefile
  minor, import pimmel.spec.in to produce rpms
  doc, cosmetics, be generous with vertical whitespace
  doc, add a section explaining the router/dealer programs
  minor, by default send packets to site local address