lua: move Lua packages under lang/lua sub-folder

There are roughly 50 Lua packages.
It's about time we consider a proposal for moving all of them
under a lang/lua sub-folder.

Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>

lang/lua/lpeg/Makefile

@@ -0,0 +1,47 @@
+#
+# Copyright (C) 2015 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=lpeg
+PKG_VERSION:=1.0.2
+PKG_RELEASE:=1
+PKG_MAINTAINER:=Dirk Chang <dirk@kooiot.com>
+PKG_LICENSE:=MIT
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=http://www.inf.puc-rio.br/~roberto/lpeg/
+PKG_HASH:=48d66576051b6c78388faad09b70493093264588fcd0f258ddaab1cdd4a15ffe
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/lpeg
+  SUBMENU:=Lua
+  SECTION:=lang
+  CATEGORY:=Languages
+  TITLE:=LPeg
+  URL:=http://www.inf.puc-rio.br/~roberto/lpeg/
+  DEPENDS:=+lua
+endef
+
+define Package/lpeg/description
+	LPeg is a new pattern-matching library for Lua, based on Parsing Expression Grammars (PEGs)
+endef
+
+define Build/Configure
+endef
+
+# add make variable overrides here
+MAKE_FLAGS += \
+	COPT="$(TARGET_CFLAGS) $(TARGET_CPPFLAGS) -O2"
+
+define Package/lpeg/install
+	$(INSTALL_DIR) $(1)/usr/lib/lua
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/lpeg.so $(1)/usr/lib/lua
+endef
+
+$(eval $(call BuildPackage,lpeg))