Bump to v6.8.0-rc1+dev164 and update ReadMe

Small edit to comments in cfe_version.h

README.md

@@ -10,6 +10,17 @@ The detailed cFE user's guide can be viewed at <https://github.com/nasa/cFS/blob
 
 ## Version History
 
+### Development Build: 6.8.0-rc1+dev164
+
+- Keeps task names under 16 chars to make more debugger friendly, regardless
+of the OSAL limit. Task name shows up as `ES_BG_TASK`
+- Move ES typedefs shared across API and telemetry messages into the `cfe_es_extern_typedefs.h`.
+- Move all ES typedefs that define the telemetry interface and structures that define the output of commands that write data files into this group (query all apps, query all tasks, query all CDS).
+- Remove some localized definitions and replace with MISSION scope definitions where appropriate/necessary.
+- Adjust `strncpy()` call to avoid compiler warning
+- Cast fixed width types to the type used in the `printf` call. Removes `printf` type warnings on the 32-bit RTEMS build.
+- See <https://github.com/nasa/cFE/pull/991>
+
 ### Development Build: 6.8.0-rc1+dev150
 
 - Provide new Library API similar to App API

fsw/cfe-core/src/inc/cfe_version.h

@@ -35,13 +35,13 @@
 
 
 /* Development Build Macro Definitions */
-#define CFE_BUILD_NUMBER 150 /*!< Development Build: Number of commits since baseline */
+#define CFE_BUILD_NUMBER 164 /*!< Development Build: Number of commits since baseline */
 #define CFE_BUILD_BASELINE "v6.8.0-rc1" /*!< Development Build: git tag that is the base for the current development */
 
 /* Version Macro Definitions */
 #define CFE_MAJOR_VERSION 6 /*!< @brief ONLY APPLY for OFFICIAL releases. Major version number. */
 #define CFE_MINOR_VERSION 7 /*!< @brief ONLY APPLY for OFFICIAL releases. Minor version number. */
-#define CFE_REVISION      99 /*!< @brief ONLY APPLY for OFFICIAL releases. Revision version number. If set to 99 it indicates a development version.  */
+#define CFE_REVISION      99 /*!< @brief ONLY APPLY for OFFICIAL releases. Revision version number. A value of "99" indicates a development version.  */
 #define CFE_MISSION_REV   0 /*!< @brief ONLY USED by MISSION Implementations. Mission revision */
 
 #define CFE_STR_HELPER(x) #x /*!< @brief Helper function to concatenate strings from integer macros */