Research V7 development

Research V7 development
Work on file usr/src/cmd/struct/0.alloc.c
Work on file usr/src/cmd/struct/0.def.c
Work on file usr/src/cmd/struct/0.args.c
Work on file usr/src/cmd/struct/0.extr.c
Work on file usr/src/cmd/struct/0.parts.c
Work on file usr/src/cmd/struct/0.string.c
Work on file usr/src/cmd/struct/1.defs.h
Work on file usr/src/cmd/struct/1.finish.c
Work on file usr/src/cmd/struct/1.hash.c
Work on file usr/src/cmd/struct/1.incl.h
Work on file usr/src/cmd/struct/1.line.c
Work on file usr/src/cmd/struct/1.init.c
Work on file usr/src/cmd/struct/1.main.c
Work on file usr/src/cmd/struct/2.def.h
Work on file usr/src/cmd/struct/1.tables.c
Work on file usr/src/cmd/struct/2.dfs.c
Work on file usr/src/cmd/struct/2.dom.c
Work on file usr/src/cmd/struct/2.head.c
Work on file usr/src/cmd/struct/2.inarc.c
Work on file usr/src/cmd/struct/2.main.c
Work on file usr/src/cmd/struct/2.test.c
Work on file usr/src/cmd/struct/2.tree.c
Work on file usr/src/cmd/struct/3.branch.c
Work on file usr/src/cmd/struct/3.def.h
Work on file usr/src/cmd/struct/3.flow.c
Work on file usr/src/cmd/struct/3.loop.c
Work on file usr/src/cmd/struct/3.main.c
Work on file usr/src/cmd/struct/3.reach.c
Work on file usr/src/cmd/struct/3.test.c
Work on file usr/src/cmd/struct/3.then.c
Work on file usr/src/cmd/struct/4.brace.c
Work on file usr/src/cmd/struct/4.form.c
Work on file usr/src/cmd/struct/4.def.h
Work on file usr/src/cmd/struct/4.main.c
Work on file usr/src/cmd/struct/b.h
Work on file usr/src/cmd/struct/bdef.c
Work on file usr/src/cmd/struct/def.h
Work on file usr/src/cmd/struct/lextab.l
Work on file usr/src/cmd/struct/main.c
Work on file usr/src/cmd/struct/tree.c
Work on file usr/src/cmd/struct/makefile

Synthesized-from: v7