1. Added --guess option which print guessed character encoding.
2. Added --cp932inv options which enable to make some characters
conversion compatible with Code Page 932 (CP932) when converting
to Shift_JIS.
3. Added --prefix option. When converting to Shift_JIS, second byte of
converted character may be "meta" character. --prefix option allow
escape these characters.
4. Added support for JIS X 0212.
module directory has changed (eg. "darwin-2level" vs.
"darwin-thread-multi-2level").
binary packages of perl modules need to be distinguishable between
being built against threaded perl and unthreaded perl, so bump the
PKGREVISION of all perl module packages and introduce
BUILDLINK_RECOMMENDED for perl as perl>=5.8.5nb5 so the correct
dependencies are registered and the binary packages are distinct.
addresses PR pkg/28619 from H. Todd Fujinaka.