Fixes KazooTestHarness on Windows

Discussion takes place in issue #91.

Changes are:
  - modifies the path written inside the log4j.properties and zoo.cfg files so they are handled by java on Windows. 
  - Uses classpath separator `;` on Windows as opposed to `:` on Unix.
  - Disables interactive console activated with SIGUSR1 signal, not available on Windows

Unfortunately, starting with 1.0b1, it only leads to the error reported in issue #78 more rapidly. It can be used to test any version before.