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Fix# 1009, Apply consistent alignment pattern #1015

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Commits on Dec 8, 2020

  1. Fix nasa#1009, Alignment pattern - documentation

    - Documentation updates for applying the alignment pattern
    - Added Cmd to all command types
    - Updated example code
    - Converted Syslog to SysLog for consistency
    - CFE_SB_RcvMsg now CFE_SB_ReceiveBuffer
    - Replaced references to deprecated CFE_SB API's with MSG API's
    skliper committed Dec 8, 2020
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  2. Fix nasa#1009, Alignment pattern - Msg module updates

    - CFE_MSG_Message_t no longer worst case alignment
    - CFE_MSG_CommandHeader_t and CFE_MSG_TelemetryHeader_t now
      contain the base message type, CFE_MSG_Message_t
    - Fixed size type issue in CFE_MSG_ComputeChecksum
    - Replaced CFE_SB_TlmHdr_t and CFE_SB_CmdHdr_t with
      CFE_MSG_CommandHeader_t and CFE_MSG_TelemetryHeader_t
    skliper committed Dec 8, 2020
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  3. Fix nasa#1009, Alignment pattern - stub updates

    - Using CFE_SB_Buffer_t where appropriate
    - Replaced CFE_SB_CMD_HDR_SIZE and CFE_SB_TLM_HDR_SIZE
      with sizeof the appropriate type
    - Deprecated CFE_SB_SendMsg, CFE_SB_RcvMsg stubs
    - Added CFE_SB_TransmitBuffer, CFE_SB_TransmitMsg, and
      CFE_SB_ReceiveBuffer stubs
    skliper committed Dec 8, 2020
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  4. Fix nasa#1009, Alignment pattern - unit tests

    - Replaced CFE_SB_SendMsg and CFE_SB_PassMsg with CFE_SB_TransmitMsg
    - Replaced CFE_SB_ZeroCopySend and CFE_SB_ZeroCopyPass with
      CFE_SB_TransmitBuffer
    - Replaced CFE_SB_RcvMsg with CFE_SB_ReceiveBuffer
    - Used CFE_SB_Buffer_t and CFE_MSG_Message_t where appropriate
    - Added Cmd to all command types
    - Changed Syslog to SysLog for consistency
    - Removed "see also" blocks in documentation, APIs are already grouped
      and these typically don't add anything useful (simplifies maintenance)
    skliper committed Dec 8, 2020
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  5. Fix nasa#1009, Alignment pattern - core updates

    - Added CFE_SB_TransmitMsg, CFE_SB_TransmitBuffer,
      CFE_SB_ReceiveBuffer (partial nasa#1019 fix)
    - Replace CFE_SB_RcvMsg with CFE_SB_ReceiveBuffer
    - Deprecated CFE_SB_SendMsg, CFE_SB_PassMsg, CFE_SB_RcvMsg
      CFE_SB_ZeroCopyPass, CFE_SB_ZeroCopySend
    - Use CFE_SB_Buffer_t for receiving and casting to command types
    - Use CFE_MSG_CommandHeader_t and CFE_MSG_TelemetryHeader_t in
      command and telemetry type definitions
    - Use CFE_SB_TransmitMsg to copy the command and telemetry
      into a CFE_SB_Buffer_t and send it where needed
    - Avoids need to create send buffers within the app (or union
      the packet types with CFE_SB_Buffer_t)
    - Eliminates references to CFE_SB_CmdHdr_t and CFE_SB_TlmHdr_t
      that formerly enforced alignment since these had potential
      to change the actual packet sizes
    - No need to cast to CFE_MSG_Message_t anywhere since it's
      available in the CFE_SB_Buffer_t union
    - CFE_MSG_Size_t redefined as size_t to simplify future
      transition
    - Replaced Syslog with SysLog for consistency
    - Added Cmd to all command typedefs
    - Replaced CFE_SB_CMD_HDR_SIZE and CFE_SB_TLM_HDR_SIZE
      with sizeof the appropriate type
    skliper committed Dec 8, 2020
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