Properly propagate offset in file block mode.
Parse block size in MB.
Implement virtual IOFileBlock::ioActive().
Simplify  Prefetch::InitiateClose() -- return ioActive state unless file is comletely downloaded or Prefetch has not been started.
Add missing offset in Prefetch::Read() when file is completely downloaded.
Add offset information in log messages.
Check all Prefetch states in IOFileBlock::ioActive.
Check file is complete in GetNextTask().
Changes in logging.
Fix instantiation of XrdSysMutexHelper.
Fix compilation error.
Change logger namespace name from XFC to XrdFileCache.
Correct plugin name in version info macro.
In configuration support k and m suffixes using XrdOuca2x::a2sz() utils.