git: uipc: Use token for rights counting

commit b4d93c31157e63c9cb52882c88a3589135d22eab Author: Sepherosa Ziehau Date: Fri Nov 6 16:04:16 2015 +0800 uipc: Use token for rights counting This is mainly used to avoid races stemming from f_msgcount accessing w/o unp_spin. Summary of changes:

git: sys/vfs/hammer: Add HAMMER_ITOB() macro

commit 195f60760775c2a80599ff3320391adcd9442a31 Author: Tomohiro Kusumi Date: Tue Nov 3 23:25:40 2015 +0900 sys/vfs/hammer: Add HAMMER_ITOB() macro to hide explicit cast from C code so the impact will be small on possible data structure change. No