This code always buffer overflowed, because exactly 2 bytes
less than were used were allocated. This led to dtcreate
crashing when hitting "Find Set..."
Added proper SharedDtSvcReqs in lnxLib.tmpl and CplusplusLibC in
linux.cf. This allows the libstdc++ dependancy to be properly
declared for libDtSvc so that it is not neccessary to hardcode 'CCLINK
= g++' in the Imakefiles of programs linking angainst libDtSvc.