forked from Imagelibrary/rtems
* librpc/include/rpc/clnt.h, librpc/include/rpc/rpc_msg.h, librpc/src/rpc/clnt_generic.c, librpc/src/rpc/clnt_raw.c, librpc/src/rpc/clnt_tcp.c, librpc/src/rpc/clnt_udp.c, librpc/src/rpc/pmap_clnt.c, librpc/src/rpc/pmap_getmaps.c librpc/src/rpc/pmap_getport.c: Partial merger from freebsd (portability fixes).