Review 21949

C. Thomas Tyler
Removed hard-coding assumption of an Instance named 1.  Now, one of
two things must be true: P4BIN must be defined, as it would be if the
SDP envrionment is loaded in the usual way (source p4_vars N), or else
the 'p4' executable must be found in the path.
#2: Change 21951 committed into //guest/perforce_software/sdp/dev/Maintenance 3 0 0
Tip: Use n and p to cycle through the changes.