S3_2 rscompat: Convert old Clean extra rmcauses to new Clean
Convert "CleanPollution" and "CleanFallout" extra rmcauses from S3_1 ruleset to "Clean" rmcause.
S3_2 only.
Convert "CleanPollution" and "CleanFallout" extra rmcauses from S3_1 ruleset to "Clean" rmcause.
S3_2 only.