python: add old python 2 package back

According to PEP394 (http://legacy.python.org/dev/peps/pep-0394/)
the 'python' command should refer to 'python2'.

In our case, this means we should reboot the old python package.

We could rename the package name to python2, but that would
just complicate things a bit with other packages, and
since we're doing this reboot, such a complication would be
unnecessary.

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

lang/python/files/python-package.mk

@@ -0,0 +1,77 @@
+#
+# Copyright (C) 2007-2014 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+PYTHON_VERSION=2.7
+
+PYTHON_DIR:=$(STAGING_DIR)/usr
+PYTHON_BIN_DIR:=$(PYTHON_DIR)/bin
+PYTHON_INC_DIR:=$(PYTHON_DIR)/include/python$(PYTHON_VERSION)
+PYTHON_LIB_DIR:=$(PYTHON_DIR)/lib/python$(PYTHON_VERSION)
+
+PYTHON_PKG_DIR:=/usr/lib/python$(PYTHON_VERSION)/site-packages
+
+PYTHON:=python$(PYTHON_VERSION)
+
+HOST_PYTHON_BIN:=$(STAGING_DIR)/usr/bin/hostpython
+
+define HostPython
+	(	export PYTHONPATH="$(PYTHON_LIB_DIR):$(STAGING_DIR)/$(PYTHON_PKG_DIR)"; \
+		export PYTHONOPTIMIZE=""; \
+		export PYTHONDONTWRITEBYTECODE=1; \
+		$(1) \
+		$(HOST_PYTHON_BIN) $(2); \
+	)
+endef
+
+define PyPackage
+  $(call shexport,PyPackage/$(1)/filespec)
+
+  define Package/$(1)/install
+	@$(SH_FUNC) getvar $$(call shvar,PyPackage/$(1)/filespec) | ( \
+		IFS='|'; \
+		while read fop fspec fperm; do \
+		  if [ "$$$$$$$$fop" = "+" ]; then \
+			dpath=`dirname "$$$$$$$$fspec"`; \
+			if [ -n "$$$$$$$$fperm" ]; then \
+			  dperm="-m$$$$$$$$fperm"; \
+			else \
+			  dperm=`stat -c "%a" $(PKG_INSTALL_DIR)$$$$$$$$dpath`; \
+			fi; \
+			mkdir -p $$$$$$$$$dperm $$(1)$$$$$$$$dpath; \
+			echo "copying: '$$$$$$$$fspec'"; \
+			cp -fpR $(PKG_INSTALL_DIR)$$$$$$$$fspec $$(1)$$$$$$$$dpath/; \
+			if [ -n "$$$$$$$$fperm" ]; then \
+			  chmod -R $$$$$$$$fperm $$(1)$$$$$$$$fspec; \
+			fi; \
+		  elif [ "$$$$$$$$fop" = "-" ]; then \
+			echo "removing: '$$$$$$$$fspec'"; \
+			rm -fR $$(1)$$$$$$$$fspec; \
+		  elif [ "$$$$$$$$fop" = "=" ]; then \
+			echo "setting permissions: '$$$$$$$$fperm' on '$$$$$$$$fspec'"; \
+			chmod -R $$$$$$$$fperm $$(1)$$$$$$$$fspec; \
+		  fi; \
+		done; \
+	)
+	$(call PyPackage/$(1)/install,$$(1))
+  endef
+endef
+
+# $(1) => build subdir
+# $(2) => additional arguments to setup.py
+# $(3) => additional variables
+define Build/Compile/PyMod
+	$(call HostPython, \
+		cd $(PKG_BUILD_DIR)/$(strip $(1)); \
+		CFLAGS="$(TARGET_CFLAGS)" \
+		CPPFLAGS="$(TARGET_CPPFLAGS)" \
+		LDFLAGS="$(TARGET_LDFLAGS)" \
+		$(3) \
+		, \
+		./setup.py $(2) \
+	)
+	find $(PKG_INSTALL_DIR) -name "*\.pyc" -o -name "*\.pyo" | xargs rm -f
+endef