Correction des bads pour la nouvelle syntaxe

bench/typing/bad/already_theory1.why

 theory A end
-theory B uses A, A end
+theory B use A use A end

bench/typing/bad/already_theory2.why

 theory A end
 theory B end
-theory C uses A, A:B end
+theory C use A use B as A end

bench/typing/bad/unbound_theory1.why

-theory A uses B end
+theory A use B end

bench/typing/good/uses1.why

@@ -3,5 +3,5 @@ theory A
 end
 
 theory B
-  uses A
+  use A
 end

doc/manual.tex

@@ -135,8 +135,7 @@ Keywords are the following:
 %% file := decl*
 %% decl := | "theory" uident decl* "end"
 %%         | "theory" uident "." uqualid ("with" instance+ )?
-%%         | "use" "open"?  uqualid ("as" ident)
-%%         | "use" "include" uqualid %% pas de as pour include
+%%         | "use" ("open" | "include")?  uqualid ("as" ident)
 %%         | ("axiom"|"lemma"|"goal") ident ":" fmla
 %%         | "type" typarams lident ("=" (ty-alg | ty))?
 %%           ("and" typarams lident ("=" (ty-alg | ty))?)*