2.8.4-1

Fix hang in corner cases of alltoallv using point to point send/recv.
Harmonize error messages.
Fix missing NVTX section in the license.
Update README.


[ROCm/rccl commit: 911d61f214]

projects/rccl/src/include/shm.h

@@ -45,7 +45,7 @@ static ncclResult_t shmOpen(const char* shmname, const int shmsize, void** shmPt
   *shmPtr = ptr;
   return ncclSuccess;
 sysError:
-  WARN("Error while %s shared memory segment %s (size %d)\n", create ? "creating" : "attaching to", shmname, shmsize);
+  WARN("Error while %s shared memory segment %s (size %d)", create ? "creating" : "attaching to", shmname, shmsize);
 cudaError:
   if (fd != -1) close(fd);
   if (create) shm_unlink(shmname);