[fix] wrt js_of_ocaml

[fix] to be merge
[enhance] native version of syntax extension

[fix] syntax extention native

Conflicts:
	local/etc/eliom.conf
[hack] rm confict
[enhance] Ev.on(error/abort)
[fix] attrib case
mkdir -p
[enhance] check native dynlink support before building native syntax
clean wrt js_of_ocaml
missing stubs
detect available db-engine
Merge remote-tracking branch 'up/master' into merge
update depend
More of manip
revert update depend
Merge branch 'merge' of https://github.com/besport/eliom into besport-merge
Merge branch 'master' of https://github.com/ocsigen/eliom

Conflicts:
	src/server/.depend