Rewrite sourceballs to increase performance and reliability

* Decrease file stats as much as possible
	* Create a list of all packages and meta data only once
	* Create a list of available source packages only once
	* Create a list of expected packages only once
* Combine all three scripts into one to share data and code
* Use as much information from the db files as possible and avoid using svn
* Avoid attempting to create the same source package twice

Logic works as follows:
1) create a list of all packages
2) Check for each package if we need a src package and create one
3) During this process create a list of all src packages that should be there
4) Diff both lists for the cleanup

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