patch 8.2.5029: "textlock" is always zero

Problem:    "textlock" is always zero.
Solution:   Remove "textlock" and rename "textwinlock" to "textlock".
            (closes #10489)
diff --git a/src/testdir/test_edit.vim b/src/testdir/test_edit.vim
index f8749f8..d56ee62 100644
--- a/src/testdir/test_edit.vim
+++ b/src/testdir/test_edit.vim
@@ -1041,7 +1041,7 @@
   set completefunc=CompleteFunc
   call setline(1, ['', 'abcd', ''])
   2d
-  call assert_fails("normal 2G$a\<C-X>\<C-U>", 'E578:')
+  call assert_fails("normal 2G$a\<C-X>\<C-U>", 'E565:')
   bwipe!
 endfunc
 
diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index 5ae8908..365c646 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -698,7 +698,7 @@
   endfunc
   set completefunc=CompleteFunc
   call setline(1, ['', 'abcd', ''])
-  call assert_fails('exe "normal 2G$a\<C-X>\<C-U>"', 'E578:')
+  call assert_fails('exe "normal 2G$a\<C-X>\<C-U>"', 'E565:')
 
   " delete text when called for the second time
   func CompleteFunc2(findstart, base)
@@ -710,7 +710,7 @@
   endfunc
   set completefunc=CompleteFunc2
   call setline(1, ['', 'abcd', ''])
-  call assert_fails('exe "normal 2G$a\<C-X>\<C-U>"', 'E578:')
+  call assert_fails('exe "normal 2G$a\<C-X>\<C-U>"', 'E565:')
 
   " Jump to a different window from the complete function
   func CompleteFunc3(findstart, base)
diff --git a/src/testdir/test_popup.vim b/src/testdir/test_popup.vim
index 9832ccf..c389f63 100644
--- a/src/testdir/test_popup.vim
+++ b/src/testdir/test_popup.vim
@@ -655,7 +655,7 @@
   set completefunc=MessComplete
   new
   call setline(1, 'Ju')
-  call assert_fails('call feedkeys("A\<c-x>\<c-u>/\<esc>", "tx")', 'E578:')
+  call assert_fails('call feedkeys("A\<c-x>\<c-u>/\<esc>", "tx")', 'E565:')
   call assert_equal('Jan/', getline(1))
   bwipe!
   set completefunc=
diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index 6970bdc..182d570 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -3474,7 +3474,7 @@
 func Test_vimgrep_with_textlock()
   new
 
-  " Simple way to execute something with "textwinlock" set.
+  " Simple way to execute something with "textlock" set.
   " Check that vimgrep without jumping can be executed.
   au InsertCharPre * vimgrep /RunTheTest/j runtest.vim
   normal ax