Current build break - port amd64 - librumphijack

[Paul Goyette <paul%whooppee.com@localhost>]

This problem was OK with sources checked out at 2011-04-12 19:20:01 UTC 
and started failing with sources from 21:20 UTC.

#   compile  librumphijack/hijack.pico
/test-bed/tools/bin/x86_64--netbsd-gcc -O2 -Wall -Wstrict-prototypes 
-Wmissing-prototypes -Wpointer-arith -Wno-sign-compare -Wno-traditional 
-Wa,--fatal-warnings -Wreturn-type -Wswitch -Wshadow -Wcast-qual 
-Wwrite-strings -Wextra -Wno-unused-parameter -Wsign-compare -std=gnu99  
-Werror    -D_DIAGNOSTIC -D_REENTRANT  --sysroot=/test-bed/dst   -c    -fPIC 
-DPIC /test-bed/src/lib/librumphijack/hijack.c -o hijack.pico
cc1: warnings being treated as errors
/test-bed/src/lib/librumphijack/hijack.c:2135: warning: no previous prototype 
for '_sys_readlink'

I suspect it might be related to:

        Module Name:    src
        Committed By:   christos
        Date:           Tue Apr 12 19:49:48 UTC 2011

        Modified Files:
                src/lib/librumphijack: hijack.c

        Log Message:
        Fix SSP builds (Vladimir Kirillov)


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