K 10 svn:author V 6 andrew K 8 svn:date V 27 2018-01-08T10:23:31.337203Z K 7 svn:log V 178 Move some of the common thread switching code into C. This will help with future optimisations, e.g. using Address Space IDs (asid). MFC after: 1 week Sponsored by: DARPA, AFRL END