Revert "bkp before messing things up trying to figure out error -98 java4sqlite"

This reverts commit 269ae2d7dcc31b64d0ad30c95d214a7db83de477.
sqlite issue solved: for some reason, sqlite4java does not allow to use
the same driver in different threads. I was instantiating the driver in
the Init thread while afterwards using it in doGet.

This can be seen in file SQLiteConnectionn.java:

  void checkThread() throws SQLiteException {
    Thread confinement = myConfinement;
    if (confinement == null) {
      throw new SQLiteException(WRAPPER_MISUSE, this + " is not confined
or already disposed");
    }
    Thread thread = Thread.currentThread();
    if (thread != confinement) {
      String message = this + " confined(" + confinement + ") used (" +
thread + ")";
      throw new SQLiteException(WRAPPER_CONFINEMENT_VIOLATED, message);
    }
  }