openmpi: use libuc[mpst] from module if not available on system

Compiler/openmpi/modulefile

@@ -28,8 +28,9 @@ setenv		MPIRUN			$PREFIX/bin/mpirun
 set libibverbs  [glob -nocomplain /usr/lib{64,}/libibverbs.so.1*]
 set libnuma     [glob -nocomplain /usr/lib{64,}/libnuma.so.1*]
 set librdmacm   [glob -nocomplain /usr/lib{64,}/librdmacm.so.1*]
+set libucx      [glob -nocomplain /usr/lib{64,}/libuc[mpst].so.0*]
 
-if { $libibverbs eq "" || $libnuma eq "" || $librdmacm eq "" } {
+if { $libibverbs eq "" || $libnuma eq "" || $librdmacm eq "" || $libucx eq "" } {
     if { [file isdirectory $PREFIX/lib/fallback] } {
         prepend-path LD_LIBRARY_PATH      $PREFIX/lib/fallback
     }