Remove number of requests that were partially available from statistics.
New option for read and prefetch ram resources.
Queue write requests.
Run prefetch thread outside constructor.
Read from client in memory cache. Implement write to disk queue.
Put prefetch destruction in a separate task if it is io active.
Pass vector read to client unless the related blocks are downloaded.
Fix lock in ReadV().
Check file is downloaded in InitiateClose().
Update Doxygen-doc and README. Remove trailing white space.
Bugfix -- make sure read from client to ram has finished before reading from it.
Remove obsolete Task member.
Fix wait condition in ProcessWriteTasks().
Fix possible crash in destruction -- don't queue write in DoTask if Prefetch is destructing. In ReadInBlocks() add  missing dec-ref-cnt from the previous commit.
Merge branch 'xfc2-release-4.0' of https://github.com/alja/xrootd