K 10 svn:author V 5 markj K 8 svn:date V 27 2017-08-08T04:30:22.929717Z K 7 svn:log V 170 Add macros for defining attribute groups and for WO and RW attributes. Reviewed by: hselasky MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D11872 END