Can´t understand whats the problem with the cparm bootloader because it´s pretty simple.
Some flags changed a little bit but they are all in the ModuleHelp.txt.

A short guide how it works:
You just insert the modules you need. Every module which is inserted is active.
The symbol.dylib has to be used all the time if it is available for your version. (In the newest versions it is embedded)
Of course the bootflags will not work without the needed module.

Just tell me if somebody needs to know something else.