Log Message:
awesome: Fix PLIST for manpages

pkgsrc changes:
---------------
  * Add explicit dependency to textproc/ruby-asciidoctor since
    GENERATE_MANPAGES is ON by default and the man pages are generated
    if the tool is present.
  * Improve the search of asciidoctor binary by including suffixed binaries
    in case pkgtools/pkg_alternatives is not installed.
  * Bump revision