the original guess algorithm is broken for many archs
for example, the following two would break:
	arm-linux-gnueabi  --> sys=gnueabi
	x86_64-unknown-pc-linux-gnu  --> sys = pc-linux-gnu

use a simpler scheme here and hope it works for all the cases

7/30/2010 - created by Qing He <qing.he@intel.com>

diff --git a/lib/configure b/lib/configure
index 4318b05..84f6acb 100755
--- a/lib/configure
+++ b/lib/configure
@@ -53,20 +53,7 @@ cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
 sys=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo " $host $rel $cpu $sys"
 
-if [ "$host" = "linux--gnueabi" ]
-then
-	sys=linux
-fi
-
-if [ "$host" = "linux--uclibc" ]
-then
-	sys=linux
-fi
-
-if [ "$host" = "linux--uclibcgnueabi" ]
-then
-	sys=linux
-fi
+{ echo "$host" | grep linux; } && sys=linux
 
 c=config.h
 m=config.mk