adding last version of singularity

envfiles/singularity-3.4.2

+#%Module######################################################################
+#
+# 20191028 singularity 3.4.2 modulefile
+#
+
+proc ModulesHelp { } {
+puts stderr "This modulefile defines the library paths and"
+puts stderr "include paths needed to use singularity 3.4.2"
+puts stderr "The program singularity 3.4.2"
+puts stderr "is added to PATH."
+}
+
+set is_module_rm [module-info mode remove]
+
+unsetenv LD_LIBRARY_PATH
+set SING_LEVEL 3.4.2
+set SING_CURPATH /share/apps/bin/singularity/$SING_LEVEL/
+set SING_IMG /share/apps/sing-images/$SING_LEVEL/
+
+prepend-path PATH       $SING_CURPATH/bin/
+prepend-path PATH       $SING_IMG
+prepend-path LD_LIBRARY_PATH  $SING_CURPATH/lib/
+prepend-path MANPATH      $SING_CURPATH/share/man
+
+append-path  PE_PRODUCT_LIST  Singularity.$SING_LEVEL