873880b192 test: push int minimality (ChrisCho-H)
Pull request description:
Integrate the minimality test of `push_int` into that of `push_slice`. This increases test coverage.
ACKs for top commit:
apoelstra:
utACK 873880b192
tcharding:
ACK 873880b192
Tree-SHA512: 8bbd0b7ec4c69faaadb9ab4bae7429bbebd66d1d718b80f19b323a1059a983ea1b41f743a920b6fdacce213e66708ed1028227246021457601bce968b8bf3f22