Synchronized on database when unlock tables

Respect format codes from Bind message when sending results

From https://www.postgresql.org/docs/9.1/static/protocol-message-formats.html:

  Bind (F)

  ...

  After the last parameter, the following fields appear:

  Int16

    The number of result-column format codes that follow (denoted R
    below). This can be zero to indicate that there are no result
    columns or that the result columns should all use the default
    format (text); or one, in which case the specified format code is
    applied to all result columns (if any); or it can equal the actual
    number of result columns of the query.

  Int16[R]

    The result-column format codes. Each must presently be zero (text)
    or one (binary).

Also fix testBinaryTypes test:

- force binary by setting prepareThreshold to -1
- handle REAL type as float

Without the fix the corrected test testBinaryTypes fails:

  05:25:02 21:55:02.666 org.h2.test.unit.TestPgServer Expected: 12345678 actual: 825373492
  Exception in thread "main" java.lang.AssertionError: Expected: 12345678 actual: 825373492
      at org.h2.test.TestBase.fail(TestBase.java:464)
      at org.h2.test.TestBase.assertEquals(TestBase.java:617)
      at org.h2.test.unit.TestPgServer.testBinaryTypes(TestPgServer.java:404)
      at org.h2.test.unit.TestPgServer.test(TestPgServer.java:51)
      at org.h2.test.unit.TestPgServer.main(TestPgServer.java:41)

To be in sync with Build.java

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