uni_rpc.c sample program

The RPC command sample program, uni_rpc.c, sends an RPC command to a server and processes the results. This is a modification of the rpc.c sample program for use with unichar and univarchar datatypes, and requires the unipubs2 database. For instructions on installing the unipubs2 database, read the README file in $SYBASE/$SYBASE_OCS/sample/ctlibrary.