Apply the new naming schema for ccid-3 and ccid4 funcs/strucs/fields and more code shari

Gerrit,
Please consider the following patches to be applied against ccid-4 branch.

Patch #1: Remove unnecessary comments to ccids code
Patch #2: Improve the declaration of tfrc_option_receive struct
Patch #3: Apply new naming schema for TFRC TX/RX states
Patch #4: Fix naming schema for tx-rx sock struct
Patch #5: Fix naming schema for option received struct
Patch #6: Share ccid3_hc_tx_parse_options function and rename it to the new naming schema Patch #7: Fix name schema for option received struct
Patch #8: Remove inline modifier from tfrc_ccids.c functions

Thank you,
Leandro.