vim-patch:8.0.1333: some tests are run twice

Problem:    Some tests are run twice.
Solution:   Invoked most utf8 tests only from test_alot_utf8. (Yegappan
            Lakshmanan, closes vim/vim#2369)

2c997d7603

src/nvim/testdir/Makefile

@@ -71,16 +71,13 @@ NEW_TESTS ?= \
 	    test_lambda.res \
 	    test_langmap.res \
 	    test_listlbr.res \
-	    test_listlbr_utf8.res \
 	    test_let.res \
 	    test_lineending.res \
 	    test_makeencoding.res \
 	    test_marks.res \
 	    test_match.res \
 	    test_matchadd_conceal.res \
-	    test_matchadd_conceal_utf8.res \
 	    test_mksession.res \
-	    test_mksession_utf8.res \
 	    test_nested_function.res \
 	    test_normal.res \
 	    test_number.res \
@@ -96,7 +93,6 @@ NEW_TESTS ?= \
 	    test_spell.res \
 	    test_stat.res \
 	    test_startup.res \
-	    test_startup_utf8.res \
 	    test_substitute.res \
 	    test_syntax.res \
 	    test_system.res \

src/nvim/testdir/test_alot_utf8.vim

@@ -7,8 +7,11 @@
 
 source test_charsearch_utf8.vim
 source test_expr_utf8.vim
+source test_listlbr_utf8.vim
 source test_matchadd_conceal_utf8.vim
+source test_mksession_utf8.vim
 source test_regexp_utf8.vim
 source test_source_utf8.vim
+source test_startup_utf8.vim
 source test_utf8.vim
 source test_utf8_comparisons.vim

src/nvim/testdir/test_mksession_utf8.vim

@@ -99,6 +99,7 @@ func Test_mksession_utf8()
   call delete('test_mks.out')
   call delete(tmpfile)
   let &wrap = wrap_save
+  set sessionoptions& splitbelow& fileencoding&
 endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab