more cleanup in maven-repo-helper

[Thomas Koch <thomas@koch.ro>]

Hi Ludovic and other debian-java hackers,

in preparation for a java based phone interview (google) on monday, I had to 
do some java hacking and found maven-repo-helper as a willing victim.

I'm not yet done but in case somebody else is also hacking on maven-repo-
helper right now, I wanted to let you know.

This is my diffstat so far, 211 deleted lines in 9 files:

 .../java/org/debian/maven/repo/Dependency.java    |  58 ++-
 .../org/debian/maven/repo/DependencyRuleSet.java  |   2 +-
 .../java/org/debian/maven/repo/POMCleaner.java    |   4 +-
 src/main/java/org/debian/maven/repo/POMInfo.java  | 369 +++++---------------
 .../java/org/debian/maven/repo/POMReader.java     | 265 +++++---------
 .../org/debian/maven/repo/POMTransformer.java     |  50 +--
 .../java/org/debian/maven/repo/Repository.java    |  14 +-
 .../java/org/debian/maven/repo/POMReaderTest.java | 144 ++++----
 .../org/debian/maven/repo/POMTransformerTest.java |  13 +-
 9 files changed, 354 insertions(+), 565 deletions(-)

Regards,

Thomas Koch, http://www.koch.ro