Add license
Start development on Research V5

Backup all prior development files
Research V5 development

Work on file usr/source/s2/nice.c
Research V5 development

Work on file usr/source/s1/fed1.s
Research V5 development

Work on file usr/source/s4/execl.s
Research V5 development

Work on file usr/source/s1/lpr.c
Research V5 development

Work on file usr/sys/param.h
Research V5 development

Work on file usr/source/s4/crt0.s
Research V5 development

Work on file usr/source/s1/dc5.s
Research V5 development

Work on file usr/source/s1/as28.s
Research V5 development

Work on file usr/source/s1/chmod.c
Research V5 development

Work on file usr/source/s4/nlist.s
Research V5 development

Work on file usr/source/s1/check.c
Research V5 development

Work on file usr/source/s4/pow.s
Research V5 development

Work on file usr/source/s4/fltpr.s
Research V5 development

Work on file usr/source/s2/su.c
Research V5 development

Work on file usr/c/c11.c
Research V5 development

Work on file usr/source/s4/perror.c
Research V5 development

Work on file usr/source/s1/as12.s
Research V5 development

Work on file usr/sys/ken/main.c