Changes

Add userland incorporation
Major differences from upstream:
	- we can construct only one incorporation
	- incorporation should be generated explicitly (publish doesn't depend on it)
	- packages shouldn't explicitly ask to be incorporated, but can ask to be not incorporated
	- we include timestamps in incorporation, as not all packages are properly versioned
 (commit: 10a7de4)

Bump build number
 (commit: e345ecd)