* [core] Next bunch of changes for Win64

- Replace some more `long` types by `Longptr_t`
- Fix pointer formatting (use `%zx` and `size_t` for architecture dependent format)
- Fix several `warning C4267: 'argument': conversion from 'size_t' to 'Ssiz_t', possible loss of data`

* [skip-ci] Fix compilation warning on i386 platforms

Fix warning: format ‘%zx’ expects argument of type ‘size_t’, but argument 2 has type ‘Long_t’ {aka ‘long int’} [-Wformat=]