spike for scheme->javascript syntax transformation (subset)

more debug info in process-file

racket-webview.rkt

@@ -196,6 +196,7 @@
       (display html* out))))
 
 (define (process-file context ext path out)
+  (dbg-webview "process-file: ext = ~a, path = ~a" ext path)
   (let ((content (file->bytes path)))
     (dbg-webview "path = ~a, number of bytes read: ~a" path (bytes-length content))
     (display content out)))