Added the initial POM for the XML-RPC core.
Added Eclipse IDE files to gitignore.
pom.xml:
 - New dependencies - mockito, guava, hamcrest.

BugRepoImpl.java:
 - New class. Implementation of the BugRepository from the SPI.

BugzillaServer.java:
 - New class. Implementation of the Bugzilla class from the SPI.

ProductRepoImpl.java:
 - New class. Implementation of the ProductRepository from the SPI.
Re-adding the Eclipse files to the .gitignore file as I don't know why they were removed at all.