python-ply: new package

From the README:

PLY is a 100% Python implementation of the common parsing tools lex
and yacc.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

lang/python-ply/Makefile

@@ -0,0 +1,44 @@
+#
+# Copyright (C) 2015 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=ply
+PKG_VERSION:=3.8
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=http://www.dabeaz.com/ply
+PKG_MD5SUM:=94726411496c52c87c2b9429b12d5c50
+
+PKG_LICENSE:=BSD-3-Clause
+PKG_LICENSE_FILES:=README.md
+PKG_MAINTAINER:=Jeffery To <jeffery.to@gmail.com>
+
+include $(INCLUDE_DIR)/package.mk
+$(call include_mk, python-package.mk)
+
+define Package/python-ply
+	SECTION:=lang
+	CATEGORY:=Languages
+	SUBMENU:=Python
+	TITLE:=python-ply
+	URL:=http://www.dabeaz.com/ply/
+	DEPENDS:=+python-light
+endef
+
+define Package/python-ply/description
+PLY is a 100% Python implementation of the common parsing tools lex
+and yacc.
+endef
+
+define Build/Compile
+	$(call Build/Compile/PyMod,,install --prefix=/usr --root=$(PKG_INSTALL_DIR))
+endef
+
+$(eval $(call PyPackage,python-ply))
+$(eval $(call BuildPackage,python-ply))