Add support for native tinyint datatype

Currently, tinyint datatype(1 byte integer) in trafodion is automatically converted to smallint (2 byte integer) and treated like smallint.
It causes values that are beyond the tinyint range to be inserted
and selected.
Same issue happens with hive tinyint datatypes which are also
treated as smallint. That causes inconsistent behavior when that
datatype is accessed or inserted from hive vs. trafodion.

This jira is to add support for true tinyint datatype in table definitions,
cast stmts, param typing and handling of hive tables.