[SYSTEMML-872] Add new SystemML.py to various artifacts

[deroneriksson]

Adds SystemML.py to the root of all artifacts where it makes sense.

[niketanpansare]

@deroneriksson Since SystemML.py is likely going to be replace by a package structure once #197 is merged in, can you please hold off this PR ? Once the PR 197 is merged, we will have a seperate Python package artifact (as a tar file).

[deroneriksson]

@niketanpansare@dusenberrymw
There is going to be another artifact added to the project devoted to Python? Shouldn't this be packaged with the regular jar and standalone tar.gz/zip?

[deroneriksson]

@niketanpansare@dusenberrymw
BTW I am fine with whatever approach you believe to be the best approach for Python users. If you think this PR should be closed w/o merging, that is fine. :-)

[niketanpansare]

The shell script in the python package 'uploadToPyPI.sh' will create a tar.gz in dist/ directory. We can add that artifact into our release. Anyone can use command 'pip install ..tar.gz' and install SystemML.

[deroneriksson]

It's probably a good idea to keep @lresende aware of the status of this to be sure that the release will follow Apache requirements.

[niketanpansare]

I have created a JIRA: https://issues.apache.org/jira/browse/SYSTEMML-883

@lresende or @deroneriksson Do either one of you want to take it over ?

[deroneriksson]

@niketanpansare I'm probably not a good choice for most Python tasks due to my lack of experience with it. :-)
Should I go ahead and close this PR?

[niketanpansare]

No worries :) ... I think we should not release the old SystemML.py (as it is deprecated) and only release the new Python package. Let's go ahead and close this PR.

@lresende commented on the JIRA that he will take a pass at this. If necessary, I too can help with it.

[deroneriksson]

I will close this PR and the accompanying JIRA.