This is needed when CFE's root CMakeLists.txt is not the highest level
CMakeLists.txt in the project.

…ATH_LEN and OS_MAX_API_NAME includes null terminator

Added CFE_OMIT_DEPRECATED_6_7 just to be consistent
Also fix #552 - removes non-existent codes

Create a new background job to handle the maintenance tasks
that had been performed in the ES main task as part of the
CFE_ES_ScanAppTable() routine.

All app state changes, including those invoked by messages,
are now handled by this job.

This also slightly changes the semantics of CFE_ES_RunLoop and
CFE_ES_ExitApp.  Now, the CFE_ES_RunLoop routine no longer requires
a RunStatus buffer.  Instead, the only thing that matters is the
RunStatus value that is eventually passed to CFE_ES_ExitApp after
the shutdown is complete.  This should be mostly backward compatible,
as the recommended app pattern would pass the same value to
both functions.

This commit also fixes #480, as the value passed to CFE_ES_ExitApp
will not override a request that was already pending.

…en sent on pipe

This also more properly defines the the CFE_SB_INVALID_MSG_ID macro for
external use going forward.

Make CFE core apps consistent in their use of the CFE_SB_MsgId type
and with the CFE SB API.  This employs the CFE SB API whenever any
of the following needs to happen:

- Use of a CFE_SB_MsgId_t value within a printf (event, syslog, etc).
- Initialization of a CFE_SB_MsgId_t from an integer value
- Comparison of two CFE_SB_MsgId_t values
- Checking if a CFE_SB_MsgId_t value is within the valid set

A few new macros are introduced, mainly because the inline functions
that already existed for this purpose cannot be used where evaluation
must be done at compile time (e.g. constants, struct initialization).
These are initially just typecasts, but could become more interesting
in future revisions.

Normally the CFE PSP uses/links with an OSAL BSP of the same name.
This removes the need to explicitly specify OSAL_SYSTEM_BSPTYPE
in the toolchain file, as it can be reliably inferred.

Fix #617, Updates comments to note that the length limit of OS_MAX_PATH_LEN and OS_MAX_API_NAME includes null terminator

CMake: minor changes to improve the CLion IDE CMake experience

Fix #295, Resolve app table scanning race conditions

Fix #580, Deprecate CFE_OS_ abstracted error codes

Fix #344, Remove mission/platform include dirs

Fix #335: Shell unsigned pkt length bug

Fix #494, Updates CFE_SB_GetLastSenderID to check if message has been sent on pipe

Manually merged to resolve conflicts.

From branch jphickey/fix-263-msgid-api:

Fix #245, Consistent use of MsgId type
Fix #263, Expose CFE_SB_IsValidMsgId() API

From branch dmknutsen/issue_240:

Fixes #240, removes MESSAGE_FORMAT_IS_CCSDS ifdefs from code

Fix #632, Infer OSAL_SYSTEM_BSPTYPE from CFE_SYSTEM_PSP_NAME

The set_directory_properties() function overwrites existing properties.
Normally the properties were empty but the global_build_options.cmake
might make it non-empty (e.g. OMIT_DEPRECATED).

Using set_property() signature instead has an option to APPEND rather
than overwrite.

The CFE_SB_HIGHEST_VALID_MSGID symbol is deprecated.

… format.