Merge remote-tracking branch 'upstream/master'
NNTP support
Cosmetic Changes; Fix header includes
cpp -> cc
Appease the linker.
Tests
Appease cmake
Remove ArticleInfo
Patch cmake list
Merge pull request #832 from CodaFi/NNTP

NNTP support
Fixed #847: make performMethodOnDispatchQueueAfterDelay thread safe
Fixed progress report for MCOIMAPFetchMessagesOperation
Fixed warning (fixed #852)
Add IMAP search body
Add allows new permanent flags property in folder info.
Clarify the difference between -searchBody: and -searchContent:
Merge pull request #854 from PrapatB/IMAP-Search-Body

Add IMAP search body
Fixed typo in a documentation.
Merge pull request #864 from robario/patch-1

Fixed typo in a documentation.
Fixed date formatter, CoreFoundation format