Set the position of "Tex-Genkou" directory and upgrade eps-input

"hcsm-base-position" is the command to set up the position of "Tex-Genkou".
"hcsm-eps" is the command to solve the issue #10 .
これも本家の`hcsm-eps-input.el`の範疇。
`hcsm-eps-input.el`に隔離して`(provide 'hcsm-eps-input)`すべし