* Simplify account.rent_epoch handling for sysvar rent (#16049)
* Add some code for special local testing
* Add comment to store_account_and_update_capitalization
* Simplify account.rent_epoch handling for sysvar rent
* Introduce *_for_test functions
* Add deprecation messages to existing api
(cherry picked from commit 6d5c6c17c5
)
# Conflicts:
# sdk/src/native_loader.rs
* Fix conflicts
Co-authored-by: Ryo Onodera <ryoqun@gmail.com>