Log Message:-----------Fix some misuses of strncat().
Modified Files:-------------- pgsql/src/bin/pg_config: pg_config.c (r1.20 -> r1.21) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_config/pg_config.c.diff?r1=1.20&r2=1.21) pgsql/src/tutorial: funcs.c (r1.15 -> r1.16) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tutorial/funcs.c.diff?r1=1.15&r2=1.16) funcs_new.c (r1.11 -> r1.12) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tutorial/funcs_new.c.diff?r1=1.11&r2=1.12)