Automate build for python3.dll.

Package missing files.

PC/python32gen.py

@@ -0,0 +1,25 @@
+# Generate python32stub.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("python32stub.def", "w")
+out.write('LIBRARY "python32"\n')
+out.write('EXPORTS\n')
+
+inp = open("python3.def")
+inp.readline()
+line = inp.readline()
+assert line.strip()=='EXPORTS'
+
+for line in inp:
+    # SYM1=python32.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()
+