libre2: bump version to 2019-04-01

compile tested on nbg6817

Signed-off-by: Amol Bhave <ambhave@fb.com>

libs/libre2/Makefile

@@ -1,15 +1,15 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=re2
-PKG_VERSION:=2018-12-01
+PKG_VERSION:=2019-04-01
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/google/re2/tar.gz/$(PKG_VERSION)?
-PKG_HASH:=715e01685719a4ed68a353ae48249612ef4a7464755c3ecccaceae91ebd34868
+PKG_HASH:=2ed94072145272012bb5b7054afcbe707447d49dcd79fd6d1689e6f3dc589def
 
 PKG_LICENSE:=BSD-3-Clause
-PKG_LICENSE_FILE:=LICENSE
+PKG_LICENSE_FILES:=LICENSE
 
 include $(INCLUDE_DIR)/package.mk
 include $(INCLUDE_DIR)/host-build.mk