System.currentTimeMillis() is influenced by system time corrections
whereas System.nanoTime() is strongly sequential. So it is better to use
System.nanoTime() when checking for timeouts and elapsed time.

Added new BITGET function, that returns true if and only if a specified bit in a long is set. This helps simulate bit fields in H2, which is an approach I'm using to significantly shrink database size.

Prior to the fix the test would fail with NPE:

  Exception in thread "main" java.lang.NullPointerException
      at org.postgresql.jdbc2.AbstractJdbc2ResultSet.checkColumnIndex(AbstractJdbc2ResultSet.java:2619)
      at org.postgresql.jdbc2.AbstractJdbc2ResultSet.checkResultSet(AbstractJdbc2ResultSet.java:2637)
      at org.postgresql.jdbc2.AbstractJdbc2ResultSet.getInt(AbstractJdbc2ResultSet.java:2005)
      at org.h2.test.server.TestPGServer.testPrepareWithUnspecifiedType(TestPGServer.java:76)
      at org.h2.test.server.TestPGServer.test(TestPGServer.java:44)
      at org.h2.test.server.TestPGServer.main(TestPGServer.java:29)

- Downloaded H2.jar (off maven) and unziped data.zip and verified we are including all the same resources
- Removed the use of maven-exec-plugin as it was wonky and wrote a bridge class to call TestAll via Junit with "fats" arg.

APIs.