node: fix host build fail

modify patch.
 https://github.com/nodejs/node/pull/19196

made not to use libressl headers
 fix to include path not to use "host/include"

Signed-off-by: Hirokazu MORIKAWA <morikw2@gmail.com>
(cherry picked from commit 818770d273)

lang/node/patches/004-node_crypto_include_cmath.patch

@@ -0,0 +1,25 @@
+From 34825d50db18631a92902af3f51ddd27aa074c90 Mon Sep 17 00:00:00 2001
+From: Jeroen Roovers <jer-gentoo@users.noreply.github.com>
+Date: Fri, 13 Apr 2018 05:54:42 +0200
+Subject: [PATCH 2/2] Include cmath ...
+
+... instead of using the C implementations of isnan and isinf
+---
+ src/node_crypto.cc | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/node_crypto.cc b/src/node_crypto.cc
+index 7c0f65a5735..0aa4adbd467 100644
+--- a/src/node_crypto.cc
++++ b/src/node_crypto.cc
+@@ -44,9 +44,9 @@
+ #include "StartComAndWoSignData.inc"
+ 
+ #include <algorithm>
++#include <cmath>
+ #include <errno.h>
+ #include <limits.h>  // INT_MAX
+-#include <math.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <vector>