Add system call implementation of ntp_gettime(2). Moved most of the work to ntp_gettime1(), which is now called by ntp_gettime() and ntp_sysctl().
Add system call implementation of ntp_gettime(2).
Moved most of the work to ntp_gettime1(), which is now called by
ntp_gettime() and ntp_sysctl().

Reviewed by:	imp, phk, njl, peter
Approved by:	njl

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