Log Message:
gcc48: don't try to make references to stack_chk_fail_local on netbsd/sun
sun was added as joyent is patching for the same.

this code is only reached if compiling for i386 (or some variation of ppc)
netbsd's stack_chk_fail_local won't work for this.

bump gcc48-libs PKGREVISION above gcc48

PR pkg/53436.