Emergency Bug Fix: SDP-1395.
sdp_upgrade.sh's STEP 9 unconditionally
chowned $SDPPackageBase/p4_binaries (a top-level directory that
only exists for '-local'-mode pre-staged binaries), causing every
normal package-structure upgrade to report a false "SDP Upgrade
FAILED" despite the upgrade actually succeeding. The real
p4_binaries location for a normal install ($WritableSDPDir/p4_binaries)
is already covered by the preceding recursive chown of
$WritableSDPDir. Removed the redundant, broken chown.