vim-patch:8.2.0539: comparing two NULL list fails

Problem:    Comparing two NULL list fails.
Solution:   Change the order of comparing two lists.
7b293c730b

N/A patches for version.c:

vim-patch:8.2.1187: terminal2 test sometimes hangs in the GUI on Travis

Problem:    Terminal2 test sometimes hangs in the GUI on Travis.
Solution:   Disable Test_zz2_terminal_guioptions_bang() for now.
c85156bb89

vim-patch:8.2.1188: memory leak with invalid json input

Problem:    Memory leak with invalid json input.
Solution:   Free all keys at the end. (Dominique Pellé, closes vim/vim#6443,
            closes vim/vim#6442)
6d3a7213f5

vim-patch:8.2.1196: build failure with normal features

Problem:    Build failure with normal features.
Solution:   Add #ifdef.
83e7450053

vim-patch:8.2.1198: terminal2 test sometimes hangs in the GUI on Travis

Problem:    Terminal2 test sometimes hangs in the GUI on Travis.
Solution:   Move test function to terminal3 to see if the problem moves too.
a4b442614c

test/functional/legacy/assert_spec.lua

@@ -38,6 +38,9 @@ describe('assert function:', function()
         call assert_equal(4, n)
         let l = [1, 2, 3]
         call assert_equal([1, 2, 3], l)
+        call assert_equal(v:_null_list, v:_null_list)
+        call assert_equal(v:_null_list, [])
+        call assert_equal([], v:_null_list)
         fu Func()
         endfu
         let F1 = function('Func')