It looks like C/C reconnect retains the database. It is correct behavior
However there is a problem that mysql_install_db.exe does not create
'test' database, thus using mysql_install_db to create datadir,
then restarting server and reconnecting does not succeed, if 'test' was
current db before reconnect.
The problem became apparent with MDEV-26715. Why it worked before,
with a simpler 'root' definition is a mystery.
Fix is to switch current connection to 'mysql' database, prior to
reconnect to the instance created via mysql_install_db.exe
The new parameter is called --config
The config file is copied to the data directory as my.ini, and possibly
modified.
Bootstrap will now use my.ini to create tables. In case of non-standard
directory/file placements, this will ensure correct permissions for the
service user.
mysql_install_db_win test is extended to test --config with non-trivial
config file.
