Fix building x86_64 on x86_64 (and hopefully all other *64 archs on the same *64):
- symlink all lib64/ dirs to the corresponding lib/ dir
Also, prevent gcc from installing some of its target libs outside of the sys-root, in the first place.
Thanks to Laurent DUFRECHOU for reporting the bug and testing the fix.

/trunk/scripts/build/cc_gcc.sh | 26 0 26 0 --------------------------
/trunk/scripts/crosstool.sh | 14 14 0 0 ++++++++++++++
2 files changed, 14 insertions(+), 26 deletions(-)

 #!/bin/bash

 # This scripts extracts a crosstool-NG configuration from the log file

 # of a toolchain build with crosstool-NG.

 # Usage: cat <logfile> |$0

 awk '

 BEGIN {

   dump = 0;

 }

 $0~/Dumping crosstool-NG configuration: done in.+s$/ {

   dump = 0;

 }

 dump == 1 { $1 = "" }

 dump == 1

 $0~/Dumping crosstool-NG configuration$/ {

   dump = 1;

 }

 ' |cut -d ' ' -f 2-