Give proper names to documentation html files.

doc/api.tex

 \chapter{The \why API}
 \label{chap:api}\index{API}
+%HEVEA\cutname{api.html}
 
 This chapter is a tutorial for the users who want to link their own
 OCaml code with the \why library. We progressively introduce the way

doc/exec.tex

 
 \chapter{Executing \whyml Programs}
 \label{chap:exec}\index{whyml@\whyml}
+%HEVEA\cutname{exec.html}
 
 This chapter shows how \whyml code can be executed, either by being
 interpreted or compiled to some existing programming language.

doc/install.tex

 
 \chapter{Compilation, Installation}
 \label{sec:install}
-
+%HEVEA\cutname{install.html}
 
 In short, installation proceeds as follows.
 \begin{flushleft}\ttfamily

doc/itp.tex

-
 \chapter{Interactive Proof Assistants}
-
+%HEVEA\cutname{itp.html}
 
 % ... We then provide specific information about some ITPs.
 

doc/manpages.tex

 \chapter{Reference Manuals for the \why Tools}
 \label{chap:manpages}
+%HEVEA\cutname{manpages.html}
 
 This chapter details the usage of each of the command-line tools
 provided by the \why environment. The main command is \texttt{why3};

doc/manual.tex

@@ -159,6 +159,7 @@ ANR project (ANR-12-INSE-0010\begin{latexonly},
 \end{center}
 
 \chapter*{Foreword}
+%HEVEA\cutname{foreword.html}
 
 %This is the manual for the Why platform version 3, or \why for
 %short.
@@ -262,6 +263,7 @@ Thi-Minh-Tuyen Nguyen, M\'ario Pereira, Asma Tafat, Piotr Trojanek.
 \appendix
 
 \chapter{Release Notes}
+%HEVEA\cutname{changes.html}
 
 \section{Release Notes for version 0.80: syntax changes w.r.t. 0.73}
 

doc/starting.tex

 \chapter{Getting Started}
 \label{chap:starting}
+%HEVEA\cutname{starting.html}
 
 \section{Hello Proofs}
 

doc/syntax.tex

 \chapter{The \why Language}
 \label{chap:syntax}
+%HEVEA\cutname{syntax.html}
 
 This chapter describes the input syntax, and informally gives its semantics,
 illustrated by examples.

doc/syntaxref.tex

 \chapter{Language Reference}
 \label{chap:syntaxref}
+%HEVEA\cutname{syntaxref.html}
 
 This chapter gives the grammar and semantics for \why and \whyml input files.
 

doc/technical.tex

 \chapter{Technical Informations}
-
+%HEVEA\cutname{technical.html}
 
 \section{Structure of Session Files}
 

doc/whyml.tex

 \chapter{The \whyml Programming Language}
 \label{chap:whyml}
+%HEVEA\cutname{whyml.html}
 
 This chapter describes the \whyml programming language.
 A \whyml input text contains a list of theories (see