* Pass to eliminate warnings.
* kern/uipc_mbuf.c: Conditional SYSINIT() usage on __rtems__.
Fix return statement without a value.
* lib/ftpfs.c: read and write filesystem routines return ssize_t.
* lib/syslog.c: Add include of <string.h> to eliminate warning.
* lib/tftpDriver.c: read and write filesystem routines return ssize_t.
* libc/gethostbydns.c: Prototype abort().
* libc/inet_ntoa.c: Prototype strcpy().
* libc/rcmd.c: Add include of <sys/select.h>
* net/if_loop.c: Turn token at end of endif to comment.
* net/rtsock.c, nfs/bootp_subr.c: Conditional SYSINIT() usage
on __rtems__.
* rtems/rtems_bootp.c: Add include of <rtems/rtems_bsdnet_internal.h>.
* rtems/rtems_bsdnet_internal.h: Added prototypes for memcpy() and
memset() since the BSD code tries to avoid using libc .h files
since it is used to being in the kernel.
* rtems/rtems_syscall.c: read and write filesystem routines
return ssize_t.
