therefore added EC_REQUEST_INIT and renamed EC_REQUEST_IN_PROGRESS to
EC_REQUEST_BUSY and EC_REQUEST_COMPLETE to EC_REQUEST_SUCCESS.

into general category info.

ec_pdo_t and ec_pdo_entry_t classes, added fmmu_config_t, adjusted
minimal example, etc...

managers.

ec_master_sync_io(); introduced events in the master state machine;
locking of slave scanning and slave configuration through allow_scan
and allow_config flags.

global.

ec_master_calc_addressing(), coupler_index and coupler_subindex variables.
Adapted lsec script and examples.