Add large number inserts to int_type tests
Add large number inserts to int_type tests

sqlite fails with a "OverflowError: long too big to convert" error when
inserting very large number, which is also fixed by using the "str"
int_type.

cryptapus/bitcoin-abe,mmitech/bitcoin-abe,muchbeli/bitcoin-abe,jonnynewbs/bitcoin-abe,Dilmacoin/dilmacoin-abe,jeorgen/bitcoin-abe,jonnynewbs/bitcoin-abe,muchbeli/bitcoin-abe,mmitech/bitcoin-abe,jeorgen/bitcoin-abe,muchbeli/bitcoin-abe,muchbeli/bitcoin-abe,Dilmacoin/dilmacoin-abe,cryptapus/bitcoin-abe