Update HOMEPAGE, comment out domain-grabbed MASTER_SITES.
fix gethostbyfoo_r lossage.
Update DEPENDS gem versions per tw.gemspec file.

Note both ruby-args_parser-0.2.0 and ruby-parallel-0.8.2 were updated
in September.
Depend on php-iconv: updater for 1.9 complains:
"PHP support for iconv is required to handle multiple charsets."
Bump PKGREVISION.