ZSTR_TRUNCATE -> PHP_SODIUM_ZSTR_TRUNCATE
ZSTR_TRUNCATE -> PHP_SODIUM_ZSTR_TRUNCATE

To match php-src.

I don't like that change, as this macro is not specific to Sodium at all.
Whatever.

jedisct1/libsodium-php,paragonie/libsodium-php,jedisct1/libsodium-php,paragonie/libsodium-php,paragonie/libsodium-php,jedisct1/libsodium-php