python-webpy: use webpy-0.39 tag

No functional change, but upstream has now tagged the release, so use the
tag instead of the sha1.

https://github.com/webpy/webpy/issues/449

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 01320bb9ff297bac38a4c9bc32ae505ac79d600f)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-webpy/python-webpy.hash

@@ -1,4 +1,4 @@
 # Locally computed
-sha256  e17ac483846fb15629c76c43cf64c0b65eac3c870dca2251801b459b1e4e12b8  python-webpy-6df75fe581e0e838d28334d5c53f52421560d38b.tar.gz
+sha256  f074241a0b839408a0b9840ade1198e16fbd6aa6393a48a0e84f73b545baab9a  python-webpy-webpy-0.39.tar.gz
 sha256  3826fd531a9b904841f5e3560fcda7e93f2ab8d11ef124ec65e10625efa26c34  LICENSE.txt
 sha256  7347fd17bfd33c4093c31dc77076733e1e0150ce8c13296c56dc042bbecede84  web/wsgiserver/LICENSE.txt

package/python-webpy/python-webpy.mk

@@ -4,8 +4,7 @@
 #
 ################################################################################
 
-# corresponds to 0.39
-PYTHON_WEBPY_VERSION = 6df75fe581e0e838d28334d5c53f52421560d38b
+PYTHON_WEBPY_VERSION = webpy-0.39
 PYTHON_WEBPY_SITE = $(call github,webpy,webpy,$(PYTHON_WEBPY_VERSION))
 PYTHON_WEBPY_SETUP_TYPE = setuptools
 PYTHON_WEBPY_LICENSE = Public Domain, CherryPy License