x11-themes/qtcurve: add patch to fix build with glibc-2.23

Gentoo-bug: 606564
Package-Manager: Portage-2.3.5, Repoman-2.3.2

x11-themes/qtcurve/files/qtcurve-1.8.18-glibc-2.23.patch

@@ -0,0 +1,13 @@
+--- a/lib/utils/color.h.orig	2017-02-16 00:55:24.000000000 +0300
++++ b/lib/utils/color.h	2017-02-16 01:00:40.176467232 +0300
+@@ -25,6 +25,10 @@
+ 
+ #include <math.h>
+ 
++#if __cplusplus >= 201103L && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 23))
++#include <cmath>
++#endif
++
+ #include "utils.h"
+ #include "options.h"
+ 

x11-themes/qtcurve/qtcurve-1.8.18-r1.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2016 Gentoo Foundation
+# Copyright 1999-2017 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
@@ -50,6 +50,7 @@ PATCHES=(
 	"${FILESDIR}/${P}-remove_qt_filedialog_api.patch"
 	"${FILESDIR}/${P}-gtk2_segfault.patch"
 	"${FILESDIR}/${P}-std_isnan.patch"
+	"${FILESDIR}/${P}-glibc-2.23.patch"
 	)
 
 pkg_setup() {