Abort timed out connections with abortConnection()

Timed out connections are not always killed with transport.loseConnection().
Call transport.abortConnection() instead.

http://twistedmatrix.com/documents/12.2.0/core/howto/servers.html

This fixes the memory leaking issues.
Merge pull request #81 from varatada/master

Abort timed out connections with abortConnection()
fixed incompatibility with older versions of twisted introduced with memory leak fix
print warning if older version of twisted without abortConnection
Fix for litecoin block sending

Use getblocktemplate instead of submitblock for litecoin node
Merge pull request #85 from Rav3nPL/patch-11

Fix for litecoin block sending
fixed self.node
added optional stratum subscribe arguments
Make p2pool's stratum implementation match the dumb de facto diff standard of scrypt stratum pools.
Merge pull request #86 from wtogami/master

Fix p2pool's stratum scrypt support
Merge remote-tracking branch 'upstream/master' into sharelog

Conflicts:
	p2pool/work.py
Fix:
    only white space