python-asn1crypto: add new package (needed for python-cryptography)

Unfortunately python-cryptography (after version 2.0.<something>)
decided to replace `pyasn1` with `asn1crypto`.

Unfortunately `pyasn1` is needed for another package,
so it can't be dropped just yet.
Not sure if dropping it would bother people.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

lang/python/python-asn1crypto/Makefile

@@ -0,0 +1,65 @@
+#
+# Copyright (C) 2017 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=python-asn1crypto
+PKG_VERSION:=0.22.0
+PKG_RELEASE:=1
+
+PKG_SOURCE:=asn1crypto-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://pypi.python.org/packages/67/14/5d66588868c4304f804ebaff9397255f6ec5559e46724c2496e0f26e68d6
+PKG_HASH:=cbbadd640d3165ab24b06ef25d1dca09a3441611ac15f6a6b452474fdf0aed1a
+
+PKG_LICENSE:=MIT
+PKG_MAINTAINER:=Alexandru Ardelean <ardeleanalex@gmail.com>
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(BUILD_VARIANT)-asn1crypto-$(PKG_VERSION)
+
+include $(INCLUDE_DIR)/package.mk
+$(call include_mk, python-package.mk)
+$(call include_mk, python3-package.mk)
+
+PKG_UNPACK:=$(HOST_TAR) -C $(PKG_BUILD_DIR) --strip-components=1 -xzf $(DL_DIR)/$(PKG_SOURCE)
+
+define Package/python-asn1crypto/Default
+  SECTION:=lang
+  CATEGORY:=Languages
+  SUBMENU:=Python
+  URL:=https://github.com/wbond/asn1crypto
+endef
+
+define Package/python-asn1crypto
+$(call Package/python-asn1crypto/Default)
+  TITLE:=python-asn1crypto
+  DEPENDS:=+PACKAGE_python-asn1crypto:python-light
+  VARIANT:=python
+endef
+
+define Package/python3-asn1crypto
+$(call Package/python-asn1crypto/Default)
+  TITLE:=python3-asn1crypto
+  DEPENDS:=+PACKAGE_python3-asn1crypto:python3-light
+  VARIANT:=python3
+endef
+
+define Package/python-asn1crypto/description
+Fast ASN.1 parser and serializer with definitions for
+private keys, public keys, certificates, CRL, OCSP,
+CMS, PKCS#3, PKCS#7, PKCS#8, PKCS#12, PKCS#5, X.509 and TSP
+endef
+
+define Package/python3-asn1crypto/description
+$(call Package/python-asn1crypto/description)
+.
+(Variant for Python3)
+endef
+
+$(eval $(call PyPackage,python-asn1crypto))
+$(eval $(call BuildPackage,python-asn1crypto))
+$(eval $(call Py3Package,python3-asn1crypto))
+$(eval $(call BuildPackage,python3-asn1crypto))