ICU upgrade to 54.1 step 2

patches/platform_nacl.patch

Index: patches/platform_nacl.patch
diff --git a/patches/platform_nacl.patch b/patches/platform_nacl.patch
new file mode 100644
index 0000000000000000000000000000000000000000..d2209aadb1ea8a5765a7a68080dafc913e84d18b
--- /dev/null
+++ b/patches/platform_nacl.patch
@@ -0,0 +1,25 @@
+diff --git a/source/common/unicode/platform.h b/source/common/unicode/platform.h
+index 07dce8a..0b40fed 100644
+--- a/source/common/unicode/platform.h
++++ b/source/common/unicode/platform.h
+@@ -121,8 +121,10 @@
+ #define U_PF_QNX 3700
+ /** Linux is a Unix-like operating system. @internal */
+ #define U_PF_LINUX 4000
++/** Native Client is pretty close to Linux. @internal */
++#define U_PF_NATIVE_CLIENT 4050
+ /** Android is based on Linux. @internal */
+-#define U_PF_ANDROID 4050
++#define U_PF_ANDROID 4100
+ /** z/OS is the successor to OS/390 which was the successor to MVS. @internal */
+ #define U_PF_OS390 9000
+ /** "IBM i" is the current name of what used to be i5/OS and earlier OS/400. @internal */
+@@ -140,6 +142,8 @@
+ #   define U_PLATFORM U_PF_ANDROID
+     /* Android wchar_t support depends on the API level. */
+ #   include <android/api-level.h>
++#elif defined(__native_client__)
++#   define U_PLATFORM U_PF_NATIVE_CLIENT
+ #elif defined(linux) || defined(__linux__) || defined(__linux)
+ #   define U_PLATFORM U_PF_LINUX
+ #elif defined(__APPLE__) && defined(__MACH__)