stage2: handle deletions and better dependency resolution
* Deleted decls are deleted; unused decls are also detected as deleted.
Cycles are not yet detected.
* Re-analysis is smarter and will not cause a re-analysis of dependants
when only a function body is changed.
0bd89979fdAndrew Kelley committed on 5/29/2020, 2:42:13 AMparent3eed7a4