message: Fix generic/Mutex.h not installed on Linux
diff: @@ -42,7 +42,8 @@ set(DIST_HDRS
  ${PUBLIC_HDR_DIR}/${TARGET}/unwindows.h
  )
  -set(DIST_LINUX_HDRS
  +# Use our custom mutex/condition only on ANDROID
  +set(DIST_ANDROID_HDRS
  ${PUBLIC_HDR_DIR}/${TARGET_LINUX}/Mutex.h
  )
  @@ -123,8 +124,8 @@ endif()
  set(INSTALL_TYPE ARCHIVE)
  install(TARGETS ${TARGET} ${INSTALL_TYPE} DESTINATION lib/${DIST_DIR})
  install(FILES ${DIST_HDRS} DESTINATION include/${TARGET})
  -if (LINUX OR ANDROID)
  - install(FILES ${DIST_LINUX_HDRS} DESTINATION include/${TARGET_LINUX})
  +if (ANDROID)
  + install(FILES ${DIST_ANDROID_HDRS} DESTINATION include/${TARGET_LINUX})
  else()
  install(FILES ${DIST_GENERIC_HDRS} DESTINATION include/${TARGET_GENERIC})
  endif()
  