[support] upgrade from Drupal 4.7 to 5.3

[Chris Johnson]

I recently did a 4.5.2 to 4.6.11 to 4.7.6 to 5.3 upgrade without
having problems by carefully following instructions.

The thread in 114459 is probably because there were a couple of
security "point" releases which changed the database, necessitating
upgrades to them.

Which version of 4.7 are you on?  I'd suggest going to 4.7.6 or better
(4.7.7 or 4.7.8) first, before going to 5.3, if you are on a release
before 4.7.6, but that's just being extra cautious.