[Omake] behavior in subdirs

[Aleksey Nogin]

Hi,

I was able to reproduce the problem (sorry for not trying it before). 
Will look into it.

% cat OMakefile
NATIVE_ENABLED=false
BYTE_ENABLED=true
.DEFAULT: $(OCamlProgram foo, foo)

% cat foo.ml
open Bar

% cat bar.ml

% omake
*** omake: reading OMakefiles
*** omake: finished reading OMakefiles (0.0 sec)
- scan . scan-ocaml-foo.ml
+ <compute 1 value dependencies>
- scan . scan-ocaml-foo.ml
+ ocamldep -I . foo.ml
!!! You are trying to build OCaml native code file: bar.cmx
!!! However, the NATIVE_ENABLED flag is not set.
!!! Include the following definition in your OMakefile
!!! if you really want to build this file.
NATIVE_ENABLED = true
*** omake: 12/18 targets are up to date
*** omake: failed (0.1 sec, 1/1 scans, 0/0 rules, 0/66 digests)
*** omake error:
    File XXX/lib/omake/build/OCaml.om: line 454, characters 12-19
    early exit(1) requested by an omake file

-- 
Aleksey Nogin

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