algorithm.h with #define ETL_NO_STL does not work in ETL version 20.28.15

[falkd]

The "rotate_general" method is using std::advance and std::distance regardless of the ETL_NO_STL definition.
This generates a compiler error e.g.:

etl/private/../algorithm.h:1296:33: error: 'distance' is not a member of 'std'

[jwellbelove]

This issue is being addressed in PR #897