Update CHANGES and version.m4 for 4.2.2

CHANGES

@@ -1,3 +1,27 @@
+===============================================================================
+                               Changes in 4.2.2
+===============================================================================
+
+# Update embedded libfabric to v1.20.1 and fix compilation with GCC 14.
+
+# Fix dataloop support for MPIX_Type_iov routines
+
+# Fix crash in Hydra when system has many local ip addresses
+
+# Fix RMA fallback check in ch4:ofi netmod
+
+# Fix MPI_UNDEFINED handling in mpi_f08 module
+
+# Fix Slurm environment variable inheritance in Hydra
+
+# Fix multiple issues with large count support in ROMIO
+
+# Fix potential hang in init using PMIx client and nonstandard keys
+
+# Fix crash if PMIx client cannot get appnum from server during init
+
+# Fix other build errors and warnings
+
 ===============================================================================
                                Changes in 4.2.1
 ===============================================================================

maint/version.m4

@@ -14,7 +14,7 @@
 # changing this by playing with diversions, but then we would probably be
 # playing with autotools-fire.
 
-m4_define([MPICH_VERSION_m4],[4.2.1])dnl
+m4_define([MPICH_VERSION_m4],[4.2.2])dnl
 m4_define([MPICH_RELEASE_DATE_m4],[unreleased development copy])dnl
 
 # For libtool ABI versioning rules see:
@@ -36,7 +36,7 @@ m4_define([MPICH_RELEASE_DATE_m4],[unreleased development copy])dnl
 # standard, and does not include MPIX_ functions and C++ bindings.
 
 # Use [0:0:0] for unstable (e.g. alpha and beta) releases.
-# last version: 4.2.1 - 16:1:4
+# last version: 4.2.2 - 16:2:4
 
 m4_define([libmpi_so_version_m4],[0:0:0])dnl