of japanese/ptex has been removed and japanese/ptex-tetex has been
renamed with japanese/ptex. These are almost the same with each other
(actually ptex-tetex had some upper compatibility with ptex), so there
should be no functionality regression.
Also, dependencies of the relevant ports have been updated and
PORTREVISON bumped.
Now charset to be used can be specified at runtime, instead of compile time.
Due to this change, charset specific ports are being removed, and pTeX now consists of two ports: ptex-base and ptex.
Ptex-base is what used to be ptex-common, which installs non-Japanese portion of the system, and ptex is what used to be the charset specific portion, which installs Japanese specific files.
Thus, ptex-common and ptex-euc are renamed to ptex-base and ptex respectively, and ptex-jis and ptex-sjis are being removed.
