Oracle JDBC driver to 12cR1 (12.1.0.1)

- Replaced old OJDBC drivers with the newest Oracle JDBC driver.
http://download.oracle.com/otn/utilities_drivers/jdbc/121010/ojdbc6.jar
Fixed Oracle TPCC workload

- Added <dbtype> to example config, otherwise this results in a
NullPointerException.
Fixed Oracle Wikipedia workload

Fixed multiple issues:
- Fixed DDL script, had some wrong field sizes and wrong table names
- Oracle handles quoted object identifiers differently. For example, 'customer'
and '"customer"' are not the same tables. Now the INSERT statements are
generated again if the DB is Oracle.
- Also, Oracle handles an empty string ("") as a NULL value. This breaks things
when inserting an empty string into a column with a NOT NULL constraint. Now
the generated strings are always guaranteed to be at least one character long.
Cleaned up unprintable characters from DDL file
Merge pull request #74 from simonkrenger/oracle-fixes

Oracle updates and benchmark fixes
trivial change: drop table cascade
Merge pull request #79 from acharis/master

trivial change: drop table cascade
Create wikipedia-db2-ddl.sql
Merge pull request #81 from awajeet/awajeet_arya

Create wikipedia-db2-ddl.sql
Fixed integer overflow problem for AuctionMarkUtil.getUniqueElementId(). The UserIds are now down to 40bits and the ItemIds are 56bits. That leaves us 7bits to generate a random number for the offset. I forget why we used it this way but hopefully this will fix things. This commit goes out to Canadian transplant Ryan Johnson. Keep your pimp hand strong son
Merge branch 'master' of github.com:oltpbenchmark/oltpbench
Checkpoint from claudius
Simple fix for loading args. I don't know how this was working before
bug fixes in SI
resolve conflict
resolve conflict
Merge branch 'master' of github.com:oltpbenchmark/oltpbench
merge with upstream, fix conflicts with DBWorkload.java