[tex-live] TeXLive has no stable source tree and resorts to DVD with binaries?

[Karl Berry]

Karlis,

Please try to review available information before asking lots of detailed
questions about long-established complicated processes.  

Off the top of my head:

http://tug.org/texlive/svn (and linked pages)
http://tug.org/texlive/build.html (and linked pages)
Master/tlpkg/doc/packages.txt
Build/README

Since you're asking lots of questions on different topics, there is no
one place that will give you the answers.

Best,
karl