Generate platform-specific FrozenModules.java line endings

Author: timfel

graalpython/com.oracle.graal.python.frozen/freeze_modules.py

@@ -587,21 +587,21 @@ def write_frozen_lookup(out_file, modules):
 
 def write_frozen_module_file(file, modules):
     if os.path.exists(file):
-        with open(file, "r", encoding="utf-8") as f:
+        with open(file, "r", encoding="utf-8", newline=os.linesep) as f:
             content = f.read()
         stat_result = os.stat(file)
         atime, mtime = stat_result.st_atime, stat_result.st_mtime
     else:
         content = None
     os.makedirs(os.path.dirname(file), exist_ok=True)
-    with open(file, "w", encoding="utf-8") as out_file:
+    with open(file, "w", encoding="utf-8", newline=os.linesep) as out_file:
         out_file.write(FROZEN_MODULES_HEADER)
         out_file.write("\n\n")
         write_frozen_modules_map(out_file, modules)
         out_file.write("\n")
         write_frozen_lookup(out_file, modules)
         out_file.write("}\n")
-    with open(file, "r", encoding="utf-8") as f:
+    with open(file, "r", encoding="utf-8", newline=os.linesep) as f:
         new_content = f.read()
     if new_content == content:
         # set mtime to the old one, if we didn't change anything