bug introduced with 29c9cc75 "Merge pull request #323 from
Akkuzin/regexp_match_enhance"

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)

According to https://www.postgresql.org/docs/9.1/static/protocol-flow.html

  The Describe message (statement variant) specifies the name of an
  existing prepared statement (or an empty string for the unnamed
  prepared statement). The response is a ParameterDescription message
  describing the parameters needed by the statement, followed by a
  RowDescription message describing the rows that will be returned when
  the statement is eventually executed (or a NoData message if the
  statement will not return rows)

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Fix document of return value of TIMESTAMPADD method

Added Travis CI config

Caching result of Calendar.get(Calendar.ZONE_OFFSET)

Updated the H2 "Commercial Support" info as it was out of date

Update to servlet API version 3.1.0 from 3.0.1

ChangeFileEncryption progress logging ignores -quiet flag

Update russian translation

Make Row an interface

Regular expression functions (REGEXP_REPLACE, REGEXP_LIKE) enhancement

(a) on modern platforms, it's way faster to call this
(b) its more accurate
(c) on my SSD, queries are fast enough the System.currentTimeMillis does
not provide a decent measurement