Fix JDBC type of TIMESTAMP WITH TIME ZONE

[marschall]

Currently the JDBC type of TIMESTAMP WITH TIME ZONE is Types.OTHER.
JDBC 4.2 has a dedicated type for this Types.TIMESTAMP_WITH_TIMEZONE.

Unfortunately this type is only available in JDBC 4.2/Java 1.8 so I
hard code the constant value instead of the constant reference.

[grandinj]

we have required Java7 for a couple versions now, so no need to hard-code the constant

[marschall]

I made a typo JDBC 4.2 is Java 1.8 and it's only available there. See
https://docs.oracle.com/javase/8/docs/api/java/sql/Types.html#TIME_WITH_TIMEZONE

[grandinj]

please a comment here why we are doing this (I don't like to look in git history to figure out things like that)

[grandinj]

also please update the changelog.html file and add a big fat [API CHANGE] to your entry

[marschall]

I added the comments, updated the changelog and created #441 to track clean ups that can be done once Java 8 is required.

[grandinj]

Great. thanks!

[ghusta]

I find it strange that "TIMESTAMP WITH TIME ZONE" was mapped to JDBC Types.OTHER.
In Postgres JDBC driver for example, it was mapped to Types.TIMESTAMP.

See there (Java 8 / JDBC 4.2 / master) : https://github.com/pgjdbc/pgjdbc/blob/master/pgjdbc/src/main/java/org/postgresql/jdbc/TypeInfoCache.java#L88
Same thing before Java 8 :
https://github.com/pgjdbc/pgjdbc/blob/REL9.4.1212/pgjdbc/src/main/java/org/postgresql/jdbc/TypeInfoCache.java#L88
But in Postgres driver, Types.TIMESTAMP_WITH_TIMEZONE is still not managed.