message: Build android apk inside build folder, not in source tree
  * This means multiple builds don't cross-contaminate, and removing the
  build folder will clean everything up again.
diff: @@ -65,7 +65,8 @@ if(ANDROID)
  add_custom_command(OUTPUT ${APK_FILE}
  DEPENDS renderdoc
  DEPENDS renderdoccmd
  - WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/renderdoccmd/android
  + WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
  + COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_SOURCE_DIR}/android ${CMAKE_CURRENT_BINARY_DIR}
  COMMAND ${CMAKE_COMMAND} -E make_directory libs/${ANDROID_ABI}
  COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:renderdoc> libs/${ANDROID_ABI}/$<TARGET_FILE_NAME:renderdoc>
  COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:renderdoccmd> libs/${ANDROID_ABI}/$<TARGET_FILE_NAME:renderdoccmd>
  