Prefer ICU to transliterate characters when available

Fixes #1008

CMakeLists.txt

@@ -1,7 +1,10 @@
 project(strawberry)
 
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.7)
 cmake_policy(SET CMP0054 NEW)
+if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.12)
+  cmake_policy(SET CMP0074 NEW)
+endif()
 
 include(CheckCXXCompilerFlag)
 include(CheckCXXSourceRuns)
@@ -102,6 +105,10 @@ if(Backtrace_FOUND)
   set(HAVE_BACKTRACE ON)
 endif()
 find_package(Iconv)
+find_package(ICU COMPONENTS uc i18n)
+if(ICU_FOUND)
+  set(HAVE_ICU ON)
+endif()
 find_package(GnuTLS REQUIRED)
 find_package(Protobuf REQUIRED)
 if(NOT Protobuf_PROTOC_EXECUTABLE)