Static compile with port check fails

[rainer]

On newer Linux versions, pmap_getmaps() is not in the static library anymore and thus the compile fails. Need to check for the availability of pmap_getmaps(). Reported by Ian Baldwin:

sh_portcheck.o: In function 'check_rpc_list':
x_sh_portcheck.c:(.text+0x25cc): undefined reference to 'pmap_getmaps'
collect2: error: ld returned 1 exit status
make: *** [samhain] Error 1

[rainer]

Believed to be fixed by changeset [439].