Define and check dependency to TR level

[Mihael Schmidt]

Define a dependency to at least a specific TR level and let the client check if the dependency is met on the server.

Idea from Kevin Adler: “Also, add declarative ways to define dependencies on OS versions: TR levels, installed products, PTF levels, etc”

[Mihael Schmidt]

TR(7.3) >= 7

[Mihael Schmidt]

added support for expressing dependency to a specific TR, fixed issue #34

→ <<cset b29971eaf15a>>