Allow DHT traffic to pass through exit sockets
convert filepath to unicode using file system encoding
try to convert tracker urls to unicode
remove unused table and index
fix some pep8 problems and bugs in makeurl.py
Merge pull request #883 from LipuFei/fixes

Fixes
update dispersy pointer
fix some pep8 problems in TrackerChecking
Merge pull request #880 from egbertbouman/dht_over_tunnel

Allow DHT traffic to pass through exit sockets
Merge pull request #884 from LipuFei/fix_sql_scripts

remove unused table and index
Merge pull request #882 from LipuFei/fix_win_unicode_path

convert filepath to unicode using file system encoding
Merge pull request #894 from LipuFei/pep8_and_bug_fixes

Pep8 and bug fixes