Merge pull request #230 from warmdawn/dev

disable three delimiters : \u3002, \uff0e, \uff61
fix bug: max concurrent count problem.
Merge branch 'last'
Merge pull request #231 from forumbyr/master

fix bug: max concurrent count problem.
fix secureDNS == secureDns
Merge pull request #232 from wade1012/dev

fix secureDNS == secureDns
fix errorMessageBug
Merge pull request #233 from wade1012/dev

fix errorMessageBug
modify log conf:add time.
Merge remote-tracking branch 'cnnic/dev'
Merge pull request #234 from forumbyr/master

modify log conf:add time.
fix bug:concurrent query count error
Merge pull request #239 from forumbyr/master

fix bug:concurrent query count error
fix bug:concurrent query count error
Merge pull request #241 from forumbyr/master

fix bug:concurrent query count error
add conformance from db
Merge commit '554a45dfca926d791bc72bfd4f8f304670dbdc6a' into dev
add help query
fix bug:search xn--* should be valid; 
add NFKC to domain/ns query;
Merge pull request #242 from wade1012/dev

Dev Wade