Added HTTP_MEDIA_TYPE (maybe it will just replace the HTTP_CONTENT_TYPE later)

renamed .media_type as .simple_type for now
  allow more than one parameters

library/server/wsf/src/mime/wsf_multipart_form_data_handler.e

@@ -62,7 +62,7 @@ feature {NONE} -- Implementation: Form analyzer
 			is_crlf: BOOLEAN
 		do
 			l_boundary := a_content_type.parameter ("boundary")
-			if l_boundary /= Void then
+			if l_boundary /= Void and then not l_boundary.is_empty then
 				p := s.substring_index (l_boundary, 1)
 				if p > 1 then
 					l_boundary_prefix := s.substring (1, p - 1)

library/server/wsf/tests/src/test_wsf_request_mime_handler.e

@@ -48,8 +48,8 @@ feature -- Tests
 						["PATH_INFO", "/foo"]
 					>>
 
-			create ct.make_from_content_type_header ({HTTP_MIME_TYPES}.multipart_form_data)
-			ct.set_parameter ("boundary", "__=_the_boundary_1332296477_1804289383_=__")
+			create ct.make_from_string ({HTTP_MIME_TYPES}.multipart_form_data)
+			ct.add_parameter ("boundary", "__=_the_boundary_1332296477_1804289383_=__")
 			create h.make
 			h.put_content_type (ct)
 
@@ -64,7 +64,7 @@ Content-Disposition: form-data; name="password"
 EWFpassword
 --__=_the_boundary_1332296477_1804289383_=__--
 ]"
-			
+
 			h.put_content_length (b.count)
 
 			--| Case #1