Try to split this 400 lines (!) function.
	+ Factorize some duplicated code.

ParserUtils.flat_flaged_list -> ParserUtils.flat_flagged_list

Ident.t is now an abstract data type (instead of a string).
fullid is turned into an Ident.long, and is also made abstract.

Add basic regression tests.

Add "assert false" statements everywhere it was necessary.

Add the fby operator in the syntax.

Add support for the fby predefined operator

	new file:   src/.compile.ml
	modified:   src/TAGS
	modified:   src/main.ml
	modified:   src/syntaxe.ml

 Changed but not updated:
   (use "git add/rm <file>..." to update what will be committed)

	deleted:    src/doc/html/EvalConst.html
	deleted:    src/doc/html/EvalType.html
	deleted:    src/doc/html/ExpandPack.html
	deleted:    src/doc/html/LazyCompiler.html
	deleted:    src/doc/html/Lxm.html
	deleted:    src/doc/html/SrcTab.html
	deleted:    src/doc/html/SymbolTab.html
	deleted:    src/doc/html/Verbose.html
	deleted:    src/doc/html/index.html
	deleted:    src/doc/html/index_attributes.html
	deleted:    src/doc/html/index_class_types.html
	deleted:    src/doc/html/index_classes.html
	deleted:    src/doc/html/index_exceptions.html
	deleted:    src/doc/html/index_methods.html
	deleted:    src/doc/html/index_module_types.html
	deleted:    src/doc/html/index_modules.html
	deleted:    src/doc/html/index_types.html
	deleted:    src/doc/html/index_values.html
	deleted:    src/doc/html/style.css
	deleted:    src/doc/html/type_EvalConst.html
	deleted:    src/doc/html/type_EvalType.html
	deleted:    src/doc/html/type_ExpandPack.html
	deleted:    src/doc/html/type_LazyCompiler.html
	deleted:    src/doc/html/type_Lxm.html
	deleted:    src/doc/html/type_SrcTab.html
	deleted:    src/doc/html/type_SymbolTab.html
	deleted:    src/doc/html/type_Verbose.html
	deleted:    src/lpp.prj
	deleted:    src/md5.ml
	deleted:    src/ocamldoc.out
	deleted:    src/parser.output
	deleted:    src/t.ml
	deleted:    src/v.ml
	deleted:    src/xx.ml