Move conditional preprocessing out of the SYSCTL_ADD_STRING macro invocation.  Per C99 6.10.3 paragraph 11 preprocessing directives appearing inside macro arguments yield undefined behavior.
Move conditional preprocessing out of the SYSCTL_ADD_STRING macro
invocation.  Per C99 6.10.3 paragraph 11 preprocessing directives
appearing inside macro arguments yield undefined behavior.

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