Add a debug info when a #line directive is handled.

The problem was: a debug info for the file which contain a #line
directive (for example a preprocessed one) was wrong.

tccpp.c

@@ -1687,6 +1687,8 @@ include_done:
             pstrcpy(file->filename, sizeof(file->filename), 
                     (char *)tokc.cstr->data);
         }
+        if (s1->do_debug)
+    	    put_stabs(file->filename, N_BINCL, 0, 0, 0);
         break;
     case TOK_ERROR:
     case TOK_WARNING: