Optionally compile with trace_printk support

properly deactivate slaves if there is no eoe slave

always use rt_mutex instead of semaphore for mutual exclusion on kernels >= 2.6.24 (removed --enable-mutex build option)

releasing of refcounted requests fixed: do not call EC_SLAVE_DBG without valid slave

e1000 on 2.6.33: handle link-down

SoE request wait_event() deadlock fixed: use wait_event_interruptible and refcount ec_master_soe_request_t objects with kref

Register read/write wait_event() deadlock fixed: use wait_event_interruptible and refcount ec_reg_request_t objects with kref

Sii write wait_event() deadlock fixed: use wait_event_interruptible and refcount ec_master_sii_write_request_t objects with kref

FoE wait_event() deadlock fixed: refcount ec_master_foe_request_t objects with kref

use rt_mutex instead of semaphore for mutual exclusion (use --enable-mutex)

SDO wait_event() deadlock fixed: refcount ec_master_sdo_request_t objects with kref

Failed FoE transfer: notify foe_queue instead of sdo_queue

fixed warning due to 64bit size_t

ecrt_master_callbacks: replaced send/receive callback mechanism with locking mechanism; removed ecrt_master_send_ext

fixed 'ethercat eoe' command: interchanged rx/tx bytes/rates

renamed ext_injection_timeout -> fsm_injection_timeout

removed now obsolete ext_datagram_queu

removed eoe thread: eoe processing now done by Idle/Operation thread

use ext_queue_sem for fsm datagram queue (instead of io_sem)

replaced injection_seq mechanism with fsm datagram queue

Increment injection_seq on slave state changes

ec_master_queue_external_datagram: fixed missing up(io_sem)

merge

Be more tolerant when selecting slaves and domains.

Fixed / improved config selection.

Assume increasing ranges if second number is omitted.

merge.

Implemented ranges for slaves, configs and domains.

Added ecrt_master_reset() method.

Inplace I/O bug: correct domain tx-size when tx-size of input and output fmmu is different.