[ECOS] Support BSD sysctl() compile failed

[Gary Guangyu Pei]

Hi, 
When I choose this option, I got the following error:

//D/eCos/packages/net/tcpip/current/src/sys/netinet/ip_input.c: In
function `ip_sysctl':
//D/eCos/packages/net/tcpip/current/src/sys/netinet/ip_input.c:1541:
warning: implicit declaration of function `sysctl_int'
//D/eCos/packages/net/tcpip/current/src/sys/netinet/ip_input.c:1555:
`securelevel' undeclared (first use in this function)
//D/eCos/packages/net/tcpip/current/src/sys/netinet/ip_input.c:1555: (Each
undeclared identifier is reported only once
//D/eCos/packages/net/tcpip/current/src/sys/netinet/ip_input.c:1555: for
each function it appears in.)
make[1]: *** [src/sys/netinet/ip_input.o.d] Error 1

Would you please let me know if there is a way to use sysctl in the eCos?

Thanks,

Gary