python-mysql: upgrade to 1.3.12

- change source from MySQL-python to mysqlclient, which is a fork of the
  former. The former project hasn't seen any updates in years.
- this is also in anticipation of the upgrade of MariaDB from 10.1.x to
  10.2.x. With the latter python-mysql does not compile - mysqlclient
  does.
- the patch is dropped as libmaria is threadsafe anyway.
- add variant for Python3.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

lang/python/python-mysql/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2014 OpenWrt.org
+# Copyright (C) 2007-2018 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -7,26 +7,43 @@
 
 include $(TOPDIR)/rules.mk
 
-PKG_NAME:=MySQL-python
-PKG_VERSION:=1.2.5
+PKG_NAME:=python-mysql
+PKG_VERSION:=1.3.12
 PKG_RELEASE:=1
 PKG_LICENSE:=GPL-2.0
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).zip
-PKG_SOURCE_URL:=https://pypi.python.org/packages/source/M/MySQL-python/
-PKG_HASH:=811040b647e5d5686f84db415efd697e6250008b112b6909ba77ac059e140c74
+PKG_SOURCE:=mysqlclient-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://files.pythonhosted.org/packages/source/m/$(PKG_NAME)
+PKG_HASH:=2d9ec33de39f4d9c64ad7322ede0521d85829ce36a76f9dd3d6ab76a9c8648e5
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(BUILD_VARIANT)-mysql-$(PKG_VERSION)
 
 include $(INCLUDE_DIR)/package.mk
 include ../python-package.mk
+include ../python3-package.mk
 
-define Package/python-mysql
+PKG_UNPACK:=$(HOST_TAR) -C $(PKG_BUILD_DIR) --strip-components=1 -xzf $(DL_DIR)/$(PKG_SOURCE)
+
+define Package/python-mysql/Default
   SUBMENU:=Python
   SECTION:=lang
   CATEGORY:=Languages
-  TITLE:=MySQL database adapter for Python
-  URL:=https://pypi.python.org/pypi/MySQL-python
+  URL:=https://pypi.python.org/project/mysqlclient
   MAINTAINER:=Gergely Kiss <mail.gery@gmail.com>
-  DEPENDS:=+python +libmysqlclient
+endef
+
+define Package/python-mysql
+  $(call Package/python-mysql/Default)
+  TITLE:=MySQL database adapter for Python
+  DEPENDS:=+PACKAGE_python-mysql:python +libmysqlclient
+  VARIANT:=python
+endef
+
+define Package/python3-mysql
+  $(call Package/python-mysql/Default)
+  TITLE:=MySQL database adapter for Python3
+  DEPENDS:=+PACKAGE_python3-mysql:python3 +libmysqlclient
+  VARIANT:=python3
 endef
 
 define Package/python-mysql/description
@@ -34,15 +51,14 @@ define Package/python-mysql/description
  server that provides the Python database API.
 endef
 
-define Build/Compile
-	$(call Build/Compile/PyMod,,install --prefix=/usr --root=$(PKG_INSTALL_DIR))
-endef
-
-define Package/python-mysql/install
-	$(INSTALL_DIR) $(1)$(PYTHON_PKG_DIR)
-	$(CP) \
-	    $(PKG_INSTALL_DIR)$(PYTHON_PKG_DIR)/* \
-	    $(1)$(PYTHON_PKG_DIR)
+define Package/python3-mysql/description
+$(call Package/python-mysql/description)
+.
+(Variant for Python3)
 endef
 
+$(eval $(call PyPackage,python-mysql))
 $(eval $(call BuildPackage,python-mysql))
+
+$(eval $(call Py3Package,python3-mysql))
+$(eval $(call BuildPackage,python3-mysql))

lang/python/python-mysql/patches/010-threadsafe.patch

@@ -1,11 +0,0 @@
---- MySQL-python-1.2.2/site_orig.cfg	2007-08-15 12:58:40.000000000 +0200
-+++ MySQL-python-1.2.2/site.cfg	2007-08-15 12:58:49.000000000 +0200
-@@ -4,7 +4,7 @@
- # static: link against a static library (probably required for embedded)
- 
- embedded = False
--threadsafe = True
-+threadsafe = False
- static = False
- 
- # The path to mysql_config.