cleanup OTAPI_Exec
Merge pull request #319 from mhamrle/otapi_cleanup

cleanup OTAPI_Exec
Restore OTLogStream::overflow, removed in commit 7deb336.
It broke the opentxs output to stdout/stderr (e.g. "opentxs list").
overflow is an inherited function from streambuf, which OTLogStream
inherits from.
Also:
Revert "OTLog: -Wunused-private-field"
This reverts commit d09d187767eb251d1f8ff91bb1730dfe0a5fe7e2.
Merge pull request #321 from benma/develop

Restore OTLogStream::overflow, removed in commit 7deb336.
split OTMessage::updateContentsByType into small methods, part 1
split OTMessage::updateContentsByType into small methods, part 2
split OTMessage::updateContentsByType into small methods, part 3
split OTMessage::updateContentsByType into small methods, part 4
split OTMessage::updateContentsByType into small methods, part 5
Reformat code from previous commits
Merge pull request #325 from mhamrle/otmessage_refactor_part3

Otmessage refactor part3
ProcessServerReplyTriggerClause, ProcessServerReplyGetRequest.
ProcessServerReplyCheckUser.
ProcessServerReplyNotarizeTransactions.
ProcessServerReplyGetTransactionNum.
ProcessServerReplyGetNymBox.
ProcessServerReplyGetBoxReceipt.
ProcessServerReplyProcessInbox.
ProcessServerReplyGetAccountFiles.
ProcessServerReplyGetContract.