Fixes and improvements for MS-Windows build.
diff --git a/src/Makefile b/src/Makefile
index db38f93..2211ba052 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -404,7 +404,7 @@
# If both python2.x and python3.x are enabled then the linking will be via
# dlopen(), dlsym(), dlclose(), i.e. pythonX.Y.so must be available
#CONF_OPT_PYTHON = --enable-pythoninterp
-#CONF_OPT_PYTHON3 = --enable-python3interp
+CONF_OPT_PYTHON3 = --enable-python3interp
# RUBY
# Uncomment this when you want to include the Ruby interface.