- to method to remove files is called "unlink" in perl

Also added an FAQ entry about logback dependencies

This fixes LBGENERAL-8

- logback-access tests are now all JUnit4

We now use sqljdbc4. (note the suffix 4)

Given dependencies on test-jar logback could not be build as 'mvn package' from 
a pristine local repository. One had to 'mvn install' first. 

- doing integration tests with various databases for logback-access

- dropped retrotranslator support

Now, only Context's have a property map. A number of classes has to change to reflect this change.

- first-step to using JUnit 4.

see also http://mojo.codehaus.org/retrotranslator-maven-plugin/index.html

- updates to documentation
- replaced slf4j-api-1.4.0.jar with slf4j-api-1.4.3.jar

- removing logback-core/lib directory

- adding resource reading capability in IncludeFileAction (see bug 89)
  cleaning up IncludeFileActionTest.java
- other minor changes

- Preparing release 0.9.7.

[1] http://bugzilla.qos.ch/show_bug.cgi?id=75
[2] http://bugzilla.qos.ch/show_bug.cgi?id=76

- marking release 0.9.4
- a small improvement to ConverterTest

- starting work on 0.9.6-SNAPSHOT