Libtorrent requires Boost 1.44
Merge pull request #123 from toyg/fix_boost_version

Libtorrent requires Boost 1.44
fix GetNextInMainChain (thanks Pieter Wuille for suggesting this)
trying to improve torrent connectivity in the long run: relax peer banning.
don't preserve banned_list on startup. peers could have been banned due to changes in
block chain (invalid key or height). we shouldn't keep them banned forever.
somewhat related to #15.
apply leveldb cygwin patch from http://code.google.com/p/leveldb/issues/detail?id=188
apply patch from http://sourceforge.net/p/cygwin-ports/libtorrent-rasterbar/ci/master/tree/0.16.7-cygwin.patch
disable iconv in cygwin
update voting usernames