romio: remove it

The MPICH project no longer supports a self-standing ROMIO library.

The embedded ROMIO does not support MPI 4 embiggening (MPI_Count).
The embedded ROMIO cannot be built against modern versions of Intel's OneAPI API (ZE).
The Open MPI I/O framework work has preferred the OMPIO component since v5.0.0 release.

So, we remove the ROMIO I/O component and remove ROMIO from the 3rd-party software.
Update the MPI I/O documentation to no longer refer to ROMIO.

Add blurb to v6.0.x release notes.

Various updates to github actions, etc.

Signed-off-by: Howard Pritchard <howardp@lanl.gov>

Author: hppritcha

.github/workflows/compile-ze.yaml

@@ -24,8 +24,5 @@ jobs:
     - name: Build Open MPI
       run: |
         ./autogen.pl
-        #
-        # we have to disable romio as its old ze stuff doesn't compile with supported ZE API
-        #
-        ./configure --prefix=${PWD}/install --disable-mpi-fortran --disable-io-romio --disable-oshmem --with-ze --disable-silent-rules
+        ./configure --prefix=${PWD}/install --disable-mpi-fortran  --disable-oshmem --with-ze --disable-silent-rules
         make -j

.gitignore

@@ -102,25 +102,6 @@ ltoptions.m4
 !3rd-party/hwloc-*.tar.*
 3rd-party/treematch/config.h
 
-3rd-party/romio341/adio/include/romioconf.h
-3rd-party/romio341/adio/include/romioconf.h.in
-3rd-party/romio341/include/mpio.h
-3rd-party/romio341/localdefs
-3rd-party/romio341/mpl/confdb/test-driver
-3rd-party/romio341/mpl/include/config.h
-3rd-party/romio341/mpl/include/config.h.in
-3rd-party/romio341/mpl/include/mplconfig.h
-3rd-party/romio341/mpl/include/mpl_timer.h
-3rd-party/romio341/mpl/localdefs
-3rd-party/romio341/test/runtests
-3rd-party/romio341/test/fcoll_test.f
-3rd-party/romio341/test/fmisc.f
-3rd-party/romio341/test/fperf.f
-3rd-party/romio341/test/large_file.c
-3rd-party/romio341/test/misc.c
-3rd-party/romio341/test/pfcoll_test.f
-3rd-party/romio341/util/romioinstall
-
 config/project_list.m4
 config/autogen_found_items.m4
 config/opal_get_version.sh

3rd-party/autogen.subdirs

@@ -1 +0,0 @@
-romio341