Add missing include for std::for_each

It is reported now by Windows build after
e0f1b5bd94 "Upgrade external/boost to
latest Boost 1.75.0".

Change-Id: Ia69c74cd72c7e8ce56c56ffbfb1c1e467ce2bdc6
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/108932
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

external/libetonyek/0001-add-missing-include-for-std-for_each.patch

@@ -0,0 +1,33 @@
+From 4b4d879a6db69ea05b89fdf99df8cb5d902d16b6 Mon Sep 17 00:00:00 2001
+From: Roland Illig <roland.illig@gmx.de>
+Date: Tue, 19 May 2020 08:43:39 +0200
+Subject: [PATCH] add missing include for std::for_each
+
+On NetBSD 8.0 x86_64, gcc complains:
+ NUM3Parser.cpp: In member function 'virtual bool libetonyek::NUM3Parser::parseDocument()':
+ NUM3Parser.cpp:46:3: error: 'for_each' is not a member of 'std'
+   std::for_each(sheetListRefs.begin(), sheetListRefs.end(), std::bind(&NUM3Parser::parseSheet, this, std::placeholders::_1));
+
+Change-Id: I723ba1bcbd10ed9215ceea8c5b224fdc5242be65
+Reviewed-on: https://gerrit.libreoffice.org/c/libetonyek/+/94450
+Tested-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>
+Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>
+---
+ src/lib/NUM3Parser.cpp | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git src/lib/NUM3Parser.cpp src/lib/NUM3Parser.cpp
+index 66fb195..c19b611 100644
+--- src/lib/NUM3Parser.cpp
++++ src/lib/NUM3Parser.cpp
+@@ -7,6 +7,7 @@
+  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  */
+ 
++#include <algorithm>
+ #include <functional>
+ 
+ #include "NUM3Parser.h"
+-- 
+2.28.0
+

external/libetonyek/UnpackedTarball_libetonyek.mk

@@ -21,6 +21,7 @@ $(eval $(call gb_UnpackedTarball_add_patches,libetonyek,\
 	external/libetonyek/ubsan.patch \
 	external/libetonyek/rpath.patch \
 	external/libetonyek/warnings.patch \
+	external/libetonyek/0001-add-missing-include-for-std-for_each.patch \
 ))
 
 ifneq ($(OS),MACOSX)