Remove casts from inet6 address testing macros, thus preserving qualifier from original argument.
Remove casts from inet6 address testing macros, thus preserving
qualifier from original argument.

Obtained from:	NetBSD, r. 1.67
Submitted by:	maxim

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase