Stop embedding workers into trywhy3.js.

This means that one can no longer perform a local test, but this was
already impossible with several browsers anyway, e.g., Chromium. So, using
a dummy server, e.g., `python3 -m http.server 8000`, is now mandatory.

Makefile.in

@@ -1744,6 +1744,7 @@ ALTERGOCMO = \
 
 TRYWHY3_PACK = \
 	trywhy3.js trywhy3.html trywhy3.css \
+	why3_worker.js alt_ergo_worker.js \
 	README.md examples/ \
 	trywhy3_custom.css gen_index.sh \
 	ace-builds/src-min-noconflict/ace.js \
@@ -1757,10 +1758,8 @@ trywhy3.tar.gz: $(addprefix src/trywhy3/, $(TRYWHY3_PACK))
 
 trywhy3: src/trywhy3/trywhy3.js src/trywhy3/why3_worker.js src/trywhy3/alt_ergo_worker.js
 
-src/trywhy3/trywhy3.js: src/trywhy3/trywhy3.byte src/trywhy3/why3_worker.js src/trywhy3/alt_ergo_worker.js src/trywhy3/examples/*.mlw
+src/trywhy3/trywhy3.js: src/trywhy3/trywhy3.byte src/trywhy3/examples/*.mlw
 	js_of_ocaml $(JSOO_DEBUG) --extern-fs -I src/trywhy3 \
-		--file=why3_worker.js:/ \
-		--file=alt_ergo_worker.js:/ \
 	        --file=examples/index.txt:/examples/index.txt \
 		`find src/trywhy3/examples -name "*.mlw" -printf " --file=examples/%P:/examples/%P"` \
 	$<

src/trywhy3/trywhy3.ml

@@ -923,7 +923,7 @@ module Controller =
 
 
     let rec init_alt_ergo_worker i =
-      let worker = Worker.create (blob_url_of_string "/alt_ergo_worker.js") in
+      let worker = Worker.create "alt_ergo_worker.js" in
       worker ##. onmessage :=
         Dom.handler (fun ev ->
             let (id, result) as res = unmarshal (ev ##. data) in
@@ -971,7 +971,7 @@ module Controller =
       process_task ()
 
     let init_why3_worker () =
-      let worker = Worker.create (blob_url_of_string "/why3_worker.js") in
+      let worker = Worker.create "why3_worker.js" in
       worker ##. onmessage :=
         Dom.handler (fun ev ->
             let msg = unmarshal (ev ##. data) in