Been wanting to do this for a long time.
This does impose performance issues when building with the vanilla
release profile, as cargo does not perform optimizations across crate
boundary (we care mostly about inlining).
so I added release-lto profile
Also fixed some broken stuff I found across the project, meh
Former-commit-id: 06d03263cc6245313f3ea22c715479ab6da7c4d4
Former-commit-id: f93abd10c67ea8a3b8072b47462be5eca4f3e02b
* Convert gpu bitfield!() registers to unpacked form, and defer pack/unpack to bus read/write operations
Former-commit-id: 26e7d7d62d6418ce7bcdb8e414cabe5ddb56333d
Former-commit-id: 716ddd9fe2b7b95b7613fc549a7bee406272478b
