Log Message:
po4a: updated to 0.72

0.72

TransTractor:
 * Remove one source of supirious error reports when writing files

Asciidoc:
 * Support a cleanspaces option to remove extra spaces in wrapped lines

Man/Groff:
 * Handle \~ as non-breaking space.
 * Properly handle \c escape sequence in .TP parameters

Markdown:
 * Treat tables as verbatim paragraphs

All scripts:
 * Add an option -w/--width to rewrap text on an arbitrary column

po4a main script only:
 * Fix the behavior of --translate-only

Documentation:
 * Fix typos
 * Kill outdated documentation on Pod parameters

Translations:
 * Updated: Croatian, thanks Milo Ivir.
 * Updated: Dutch, thanks Frans Spiesschaert.
 * Updated: French, thanks brandelune and Jean-Baptiste Holcroft.
 * Updated: German, thanks Helge Kreutzmann.
 * Updated: Italian, thanks Marco Ciampa.
 * Updated: Japanese, thanks gemmaro.
 * Updated: Spanish, thanks gallegonovato.