update go modulefiles b/c '~' character does not work with go checker

envfiles/golang-1.13.1

 #%Module######################################################################
 #
-# golang 1.11 20190320
+# golang 1.13 20190320
 #
 
 proc ModulesHelp { } {
 puts stderr "This modulefile defines the library paths and"
 puts stderr "include paths needed to use Go (golang) version 1.13.1"
-puts stderr "The program Go 1.11"
+puts stderr "Please adjust your GOPATH because Go checker does not"
+puts stderr "like the tilde character '~'"
+puts stderr "The program Go 1.13"
 puts stderr "is added to PATH."
 }
 
@@ -17,10 +19,13 @@ set GO_LEVEL 1.13
 set GO_SUBLVL 1
 set GO_CURPATH /share/apps/bin/golang/$GO_LEVEL.$GO_SUBLVL/go
 
+set userhome $env(HOME)
+
 prepend-path PATH             $GO_CURPATH/bin/
 prepend-path LD_LIBRARY_PATH  $GO_CURPATH/lib/
 prepend-path MANPATH          $GO_CURPATH/share/man
-setenv GOPATH	~/go
+setenv GOPATH	$userhome/go
 setenv GOROOT	$GO_CURPATH
+setenv GO111MODULE	off
 
 append-path  PE_PRODUCT_LIST  Golang.$GO_LEVEL.$GO_SUBLVL