Fix fallout from removing from configure script. Pointed out by philipp64 on #asterisk-dev

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@260801 65c4cc65-6c06-0410-ace0-fbb531ad65f3

build_tools/make_build_h

@@ -3,7 +3,7 @@ HOSTNAME=`uname -n`
 KERNEL=`uname -r`
 MACHINE=`uname -m`
 OS=`uname -s`
-USER=`${ID} -un`
+USER=`id | awk -F")" '{print $1}'| awk -F"(" '{print $2}'`
 DATE=`date -u "+%Y-%m-%d %H:%M:%S"`
 cat << END
 /*