Bump Windows build to 3.5

PC/python35gen.py

@@ -0,0 +1,26 @@
+# Generate python35stub.def out of python3.def
+# The regular import library cannot be used,
+# since it doesn't provide the right symbols for
+# data forwarding
+out = open("python35stub.def", "w")
+out.write('LIBRARY "python35"\n')
+out.write('EXPORTS\n')
+
+inp = open("python3.def")
+line = inp.readline()
+while line.strip().startswith(';'):
+    line = inp.readline()
+line = inp.readline() # LIBRARY
+assert line.strip()=='EXPORTS'
+
+for line in inp:
+    # SYM1=python35.SYM2[ DATA]
+    head, tail = line.split('.')
+    if 'DATA' in tail:
+        symbol, tail = tail.split(' ')
+    else:
+        symbol = tail.strip()
+    out.write(symbol+'\n')
+
+inp.close()
+out.close()