Remove lazyCommands map, directly declare all commands

[bbredesen]

lazyCommands is a map that is populated at runtime through init(). Commands will never be added to the map or changed at runtime though...they are generated from vk.xml and are set in stone at compile time.

Eliminate the lazy commands map and declare each vkCommand individually in a var( ... ) block. Commands will still be lazy-evaluated when first called. I would expect there to be some startup performance improvement, but it is worth benchmarking both models before committing this change.