patch 9.0.0303: it is not easy to get information about a script

Problem:    It is not easy to get information about a script.
Solution:   Make getscriptinf() return the version.  When selecting a specific
            script return functions and variables. (Yegappan Lakshmanan,
            closes #10991)
diff --git a/src/testdir/test_vim9_import.vim b/src/testdir/test_vim9_import.vim
index 832fad8..ed4e9d2 100644
--- a/src/testdir/test_vim9_import.vim
+++ b/src/testdir/test_vim9_import.vim
@@ -741,6 +741,7 @@
   assert_true(len(l) == 1)
   assert_match('XrelautoloadExport.vim$', l[0].name)
   assert_false(l[0].autoload)
+  assert_equal(999999, l[0].version)
 
   unlet g:result
   delete('XrelautoloadExport.vim')