Enhanced CTorrent Code

Correction in cache aging of a piece.

When flushing a cache entry, always flush all entries for the same piece.

Cache management bug due to expiration during I/O

Cache management bug due to expiration during I/O

Fix CTCS/Console recursion loop triggered by a network problem, eventually blowing out the stack.

Fix CTCS/Console recursion loop triggered by a network problem, eventually blowing out the stack.

Fix request URL encoding for non-ASCII locales.

Fix request URL encoding for non-ASCII locales.

Merge staged data at exit.

Additional "now" time updates to correct timing flaws. Too many disk accesses could be performed because the time was not being updated between operations.