doc-src/TutorialI/CTL/ctl.tex

prefer ML_file over old uses;
updated generated files;

\index{model checking example|(}%
\index{lfp@{\texttt{lfp}}!applications of|see{CTL}}
\input{document/Base.tex}
\input{document/PDL.tex}
\input{document/CTL.tex}
\index{model checking example|)}