icu: fix for glibc-2.26

srcpkgs/icu/patches/fix-glibc-2.26.patch

@@ -0,0 +1,15 @@
+--- source/i18n/digitlst.cpp	2017-01-20 01:20:31.000000000 +0100
++++ source/i18n/digitlst.cpp	2017-08-18 20:51:03.053610939 +0200
+@@ -61,11 +61,7 @@
+ #endif
+ 
+ #if U_USE_STRTOD_L
+-# if U_PLATFORM_USES_ONLY_WIN32_API || U_PLATFORM == U_PF_CYGWIN
+-#   include <locale.h>
+-# else
+-#   include <xlocale.h>
+-# endif
++# include <locale.h>
+ #endif
+ 
+ // ***************************************************************************