man/sndfile-salvage.1 : New manpage file.

Submitted-by: Jan Stary <hans@stare.cz>
Tweaked-by: Erik de Castro Lopo <erikd@mega-nerd.com>
programs/*.c : Clean up and normailize printing of version strings.

Suggested-by: Jan Stary <hans@stare.cz>
programs/sndfile-metadata-*.c : Minor cleanup.

Patch-from: Jan Stary <hans@stare.cz>
man/sndfile-metadata-get.1 : Improvements.