Add 2.7.3rc2 uuid

Tools/msi/uuids.py

@@ -56,6 +56,7 @@ product_codes = {
     '2.7.2121':'{B2E1F06E-F719-4786-972A-488A336EB2A0}', # 2.7.2rc1
     '2.7.2150':'{2E295B5B-1AD4-4d36-97C2-A316084722CF}', # 2.7.2
     '2.7.3121':'{1ACB88BF-1425-4f11-B664-6C89A3D7699C}', # 2.7.3rc1
+    '2.7.3122':'{B12311BE-6364-4b2a-A49A-551EEE10F3E4}', # 2.7.3rc2
     '2.7.3150':'{C0C31BCC-56FB-42a7-8766-D29E1BD74C7C}', # 2.7.3
     '2.7.4121':'{47F45F45-72D7-4e54-AF41-26767EDE95CF}', # 2.7.4rc1
     '2.7.4150':'{84ADC96C-B7E0-4938-9D6E-2B640D5DA224}', # 2.7.4