vim-patch:8.1.0734: the hlsearch state is not stored in a session file (#13547)

Problem:    The hlsearch state is not stored in a session file.
Solution:   Add "nohlsearch" if appropriate. (Jason Franklin)
e3c74d249a

Vi default for 'sessionoptions' includes 'options'.
Use 'set sessionoptions&vi' to use Vim's default 'sessionoptions'.
If a test sets 'sessionoptions',
reset 'sessionoptions' at the end of the test.

N/A patches for version.c:

vim-patch:8.2.0119: message test fails on some platforms

Problem:    Message test fails on some platforms. (Elimar Riesebieter)
Solution:   Add type cast to vim_snprintf() argument. (Dominique Pelle)
1470dc35c4

vim-patch:8.2.0234: message test fails on SunOS

Problem:    Message test fails on SunOS.
Solution:   Adjust expectation for printf "%p". (Ozaki Kiichi, closes vim/vim#5595)
d5b9914938

vim-patch:8.2.2149: popupwin test for latin1 sometimes fails

Problem:    Popupwin test for latin1 sometimes fails.
Solution:   Wait for the script to finish.
4c5bdb99ad

vim-patch:8.2.2150: Github actions CI isn't used for all available platforms

Problem:    Github actions CI isn't used for all available platforms.
Solution:   Update the github workflows. (Ozaki Kiichi, closes vim/vim#7433)
8ea05de6aa

vim-patch:8.2.2151: $dir not expanded when configure checks for moonjit

Problem:    $dir not expanded when configure checks for moonjit.
Solution:   Use double quotes instead of single quotes. (closes vim/vim#7478)
a79a8944da

vim-patch:8.2.2153: popupwin test for latin1 still fails sometimes

Problem:    Popupwin test for latin1 still fails sometimes.
Solution:   Wait for the "cat" command to finish.
b125b535bb

vim-patch:8.2.2154: popupwin test for terminal buffer fails sometimes

Problem:    Popupwin test for terminal buffer fails sometimes.
Solution:   Wait for the prompt to appear.
0353f56ddb

src/nvim/testdir/setup.vim

@@ -20,6 +20,7 @@ set tags=./tags,tags
 set undodir^=.
 set wildoptions=
 set startofline
+set sessionoptions&vi
 
 " Prevent Nvim log from writing to stderr.
 let $NVIM_LOG_FILE = exists($NVIM_LOG_FILE) ? $NVIM_LOG_FILE : 'Xnvim.log'