Add NEWS and RELEASE_NOTES entries for bcast changes.

Bug 11722.

NEWS

@@ -166,6 +166,8 @@ documents those changes that are of interest to users and administrators.
     only attempt to allocate as much as needed from the allocation instead
     of always trying to allocate every node in the allocation.
  -- Jobs that request the whole node now check to see if any gres are allocated.
+ -- Rename SbcastParameters to BcastParameters.
+ -- Make srun sensitive to BcastParameters.
 * Changes in Slurm 20.11.9
 ==========================

RELEASE_NOTES

@@ -114,6 +114,7 @@ CONFIGURATION FILE CHANGES (see man appropriate man page for details)
  -- Added Script DebugFlags for debugging slurmscriptd (the process that runs
     slurmctld scripts such as PrologSlurmctld and EpilogSlurmctld).
  -- Added SlurmScriptdPidFile to slurm.conf.
+ -- Rename SbcastParameters to BcastParameters.
 
 COMMAND CHANGES (see man pages for details)
 ===========================================
@@ -142,6 +143,7 @@ COMMAND CHANGES (see man pages for details)
     Also "POWER" state flag string is "POWERED_DOWN".
  -- scrontab - add ability to update crontab from a file or standard input.
  -- scrontab - added ability to set and expand variables.
+ -- Make srun sensitive to BcastParameters.
 
 API CHANGES
 ===========