Treewide fix of typo: PKG_LICENSE_FILE --> PKG_LICENSE_FILES

Without the trailing _S_ the variable is not considered at all.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

libs/libfastjson/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libfastjson
 PKG_VERSION:=0.99.2
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_PROTO:=git
@@ -19,7 +19,7 @@ PKG_SOURCE_VERSION:=v$(PKG_VERSION)
 
 PKG_MAINTAINER:=Dov Murik <dmurik@us.ibm.com>
 PKG_LICENSE:=MIT
-PKG_LICENSE_FILE:=COPYING
+PKG_LICENSE_FILES:=COPYING
 
 PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1