Hackfix Sahana's Web2Py gis/proxy

https://github.com/sahana/eden_deploy/commit/5f1d8d8b2
https://github.com/web2py/web2py/issues/2262

lxc-apps/sahana/image.d/tmp/python38.patch

@@ -9,6 +9,25 @@
      if not gluon.fileutils.check_credentials(request):
          raise HTTP(401, web2py_error='invalid credentials')
      stdout = sys.stdout
+--- gluon/globals.py
++++ gluon/globals.py
+@@ -241,7 +241,15 @@
+         # parse POST variables on POST, PUT, BOTH only in post_vars
+         if body and not is_json and env.request_method in ('POST', 'PUT', 'DELETE', 'BOTH'):
+             query_string = env.pop('QUERY_STRING', None)
+-            dpost = cgi.FieldStorage(fp=body, environ=env, keep_blank_values=1)
++            content_disposition = env.get('HTTP_CONTENT_DISPOSITION')
++            if content_disposition:
++                headers = {'content-disposition': content_disposition,
++                           'content-type': env['CONTENT_TYPE'],
++                           'content-length': env['CONTENT_LENGTH'],
++                           }
++            else:
++                headers = None
++            dpost = cgi.FieldStorage(fp=body, environ=env, headers=headers, keep_blank_values=1)
+             try:
+                 post_vars.update(dpost)
+             except:
 --- gluon/languages.py
 +++ gluon/languages.py
 @@ -16,7 +16,6 @@