python-pip-conf: split package away from python package

This should improve build time if you only want to
build Python3 (and not Python).

Because python-pip-conf was part of the python package,
the whole python package (host + target) would get built if Python3
would need to get built.

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

lang/python/python-pip-conf/Makefile

@@ -0,0 +1,36 @@
+#
+# 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-pip-conf
+PKG_VERSION:=0.1
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/python-pip-conf
+  SUBMENU:=Python
+  SECTION:=lang
+  CATEGORY:=Languages
+  TITLE:=Configuration file for pip/pip3
+  URL:=https://pip.pypa.io
+  MAINTAINER:=Alexandru Ardelean <ardeleanalex@gmail.com>
+endef
+
+define Package/python-pip-conf/description
+ Configuration file for pip/pip3
+endef
+
+Build/Compile:=
+
+define Package/python-pip-conf/install
+	$(INSTALL_DIR) $(1)/etc
+	$(CP) ./files/pip.conf $(1)/etc
+endef
+
+$(eval $(call BuildPackage,python-pip-conf))

lang/python/python-pip-conf/files/pip.conf

@@ -0,0 +1,3 @@
+[global]
+cache-dir=/tmp/.cache
+log-file=/tmp/pip-log.txt