python-oauthlib: adjust Makefile style

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>

lang/python/python-oauthlib/Makefile

@@ -1,6 +1,4 @@
 #
-# Copyright (C) 2007-2016 OpenWrt.org
-#
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
 #
@@ -9,25 +7,29 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=python-oauthlib
 PKG_VERSION:=3.0.1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
+
+PKG_MAINTAINER:=Eneas U de Queiroz <cote2004-github@yahoo.com>
 PKG_LICENSE:=BSD-3-Clause
+PKG_LICENSE_FILES:=LICENSE
 
 PKG_SOURCE:=oauthlib-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://files.pythonhosted.org/packages/source/o/oauthlib
 PKG_HASH:=0ce32c5d989a1827e3f1148f98b9085ed2370fc939bf524c9c851d8714797298
+
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(BUILD_VARIANT)-oauthlib-$(PKG_VERSION)
-PKG_UNPACK=$(HOST_TAR) -C $(PKG_BUILD_DIR) --strip-components=1 -xzf $(DL_DIR)/$(PKG_SOURCE)
 
 include $(INCLUDE_DIR)/package.mk
 include ../python-package.mk
 include ../python3-package.mk
 
+PKG_UNPACK:=$(HOST_TAR) -C $(PKG_BUILD_DIR) --strip-components=1 -xzf $(DL_DIR)/$(PKG_SOURCE)
+
 define Package/python-oauthlib/Default
   SUBMENU:=Python
   SECTION:=lang
   CATEGORY:=Languages
-  MAINTAINER:=Eneas U de Queiroz <cote2004-github@yahoo.com>
-  TITLE:=A generic, spec-compliant, thorough implementation of the OAuth request-signing logic
+  TITLE:=OAuth request-signing logic for Python
   URL:=https://github.com/oauthlib/oauthlib
 endef
 
@@ -44,7 +46,8 @@ define Package/python3-oauthlib
 endef
 
 define Package/python-oauthlib/description
-  A generic, spec-compliant, thorough implementation of the OAuth request-signing logic for Python
+  A generic, spec-compliant, thorough implementation of the OAuth request-signing
+  logic for Python
 endef
 
 define Package/python3-oauthlib/description