FTS 2.2.2: rolling out

FTS version 2.2.2 (SL4) proceeded to "rolling out" phase. The main updates:

- By default, SRM/gridFTP actions are no longer split. One can re-enable the FTS 2.2.0 behaviour by setting the

FTA_TYPEDEFAULT_URLCOPY_AGENT_SRM_GRIDFTP_SPLIT

Yaim configuration option. See the related Savannah task.

- More liberal checksum handling: algorithm names should follow the specifications, however, some endpoints do not follow them yet. Temporarily, we enabled using their conventions with warnings in the logs. See the related Savannah task.

- Some relax on requirements on how long an SRM TURL is kept valid.