FreeBSD/src 208ae7b (r351423). UPDATING, sbin/ping6 ping6.8 ping6.c

ping6: Rename options for better consistency with ping

Now equivalent options have the same flags, and nonequivalent options have
different flags.  This is a prelude to merging the two commands.

Submitted by:   Ján Sučan <sucanjan at gmail.com>
MFC:            Never
Sponsored by:   Google LLC (Google Summer of Code 2019)
Differential Revision:  https://reviews.freebsd.org/D21345
DeltaFile
+30-30sbin/ping6/ping6.8
+27-27sbin/ping6/ping6.c
+6-6sbin/ping6/tests/ping6_test.sh
+0-6sbin/ping6/tests/ping6_c1_s8_X1.out
+6-0sbin/ping6/tests/ping6_c1_s8_t1.out
+5-0UPDATING
+1-1sbin/ping6/tests/Makefile
+75-707 files

UnifiedSplitRaw