Added __init__ file
Added more debug messages.
Add missing delete messageCentral in dtor
Fix minor comment typos
Simplify code in Router class
Minor optimization in Router::closeControlSocket and Router::closeDataSocket
Set Router::persistState() as const
Minor cleanup; add some utility functions
Fixed the inconsistent results bug, fixed minor bugs in propose.scm
Merge branch 'anaphora_resolution' of https://github.com/hujiewang/opencog into anaphora_resolution

Need to merge modified atomspace.scm
Fixed the sorting bug
Added test Pattern Mather ouput link order.
Merge pull request #893 from shujingke/PM

More debug on Pattern Matcher.
spell error fix
replaced default call back by attentional focus callback
deleted my nonsenses
another way
created pln callback handler and scheme binding
implemented callbacks
created unitTest for PLN PatternMatcher