Set development version to 99 and mission rev to 0xFF

Author: astrogeco

src/os/inc/osapi-version.h

@@ -47,9 +47,9 @@
 /*!
  * @brief Mission revision.
  *
- * Reserved for mission use to denote patches/customizations as needed.
+ * Reserved for mission use to denote patches/customizations as needed. Value of 0xFF may indicate a development version
  */
-#define OS_MISSION_REV 0
+#define OS_MISSION_REV 0xFF
 
 /*
  * Tools to construct version string