Add XmlHttpRequest.update and progress mositoring
Set the xhr onprogress handlers when a function is provided
Merge pull request #43 from zakki/xhr

Add XmlHttpRequest.update and progress mositoring
Merge pull request #42 from hhugo/minify

New Linker + Minify external js
LIB: function to decode html entities
COMPILER: improve parser
COMPILER: fix lexing (regexp and number)
COMPILER: refactor with menhir syntax
COMPILER: new comment token
COMPILER: clean/improve js parser (one hack inside)
COMPILER: document parsing hack
PARSER: clean
COMPILER: typo on lexer
Merge pull request #44 from hhugo/parser

COMPILER: improve parser
COMPILER: warn when overriding primitives
RUNTIME: implement caml_ml_output
TOPLEVEL: clean runtime
COMPILER: improve link warnings