Merge pull request #52 from elzaggo/develop

Fixed random test thread count.
Copy PYTHONPATH from installation env to hadoop-env.sh
Add PYTHONPATH to hadoop-env.sh during installation only if the variable is set
Print an error if any examples fail to run correctly
Merge pull request #53 from ilveroluca/develop

small stuff
Removed patching.

We are assuming that we can manage with #define and our own java pipes
versions.
Duplication and split of java code by hadoop v1 v2
More v1 v2 split.
Removed obsolete debian packaging support.