(Only the first 10 of 45 ports in this commit are shown above. )
Migrate japanese/ptex{,-base,-tetex} to japanese/ptex; the old version
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.