avs_core/CMakeLists.txt: provide arch.h in installed headers

Author: qyot27

avs_core/CMakeLists.txt

@@ -216,6 +216,7 @@ INSTALL(DIRECTORY "include/"
         DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/avisynth")
 
 INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/version.h"
+              "${CMAKE_CURRENT_BINARY_DIR}/arch.h"
         DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/avisynth/avs")
 
 INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/avisynth.pc"