`make results` error on aarch64 platform

There is an error when we run `scripts/results` script.

``` error log
$ bash -x results
++ ../scripts/os
../scripts/gnu-os: unable to guess system type

This script, last modified 2004-08-18, has failed to recognize
the operating system you are using. It is advised that you
download the most up to date version of the config scripts from

ftp://ftp.gnu.org/pub/gnu/config/

If the version you run (../scripts/gnu-os) is already up to date, please
send the following data and any information you think might be
pertinent to in order to provide the needed
information to handle your system.

config.guess timestamp = 2004-08-18

uname -m = aarch64
uname -r = 4.19.0-9-arm64
uname -s = Linux
uname -v = #1 SMP Debian 4.19.118-2 (2020-04-29)

/usr/bin/uname -p = unknown
/bin/uname -X =

hostinfo =
/bin/universe =
/usr/bin/arch -k =
/bin/arch = aarch64
/usr/bin/oslevel =
/usr/convex/getsysinfo =

UNAME_MACHINE = aarch64
UNAME_RELEASE = 4.19.0-9-arm64
UNAME_SYSTEM = Linux
UNAME_VERSION = #1 SMP Debian 4.19.118-2 (2020-04-29)
+ OS=
++ ../scripts/config
+ CONFIG=CONFIG.debian
+ RESULTS=results/
++ uname -n
+ BASE=../results//debian
+ EXT=0
+ '[' '!' -f ../bin//CONFIG.debian ']'
+ . ../bin//CONFIG.debian
++ DISKS=
++ DISK_DESC=
++ OUTPUT=/dev/null
++ ENOUGH=5000
++ FASTMEM=NO
++ FILE=/var/tmp/XXX
++ FSDIR=/var/tmp
++ INFO=INFO.debian
++ LINE_SIZE=128
++ LOOP_O=0.00000054
++ MAIL=no
++ TOTAL_MEM=32170
++ MB=8
++ MHZ='1997 MHz, 0.5008 nanosec clock'
++ MOTHERBOARD=
++ NETWORKS=
++ OS=
++ PROCESSORS=8
++ REMOTE=
++ SLOWFS=NO
++ SYNC_MAX=1
++ LMBENCH_SCHED=DEFAULT
++ TIMING_O=0
++ RSH=rsh
++ RCP=rcp
++ VERSION=lmbench-3alpha4
++ BENCHMARK_HARDWARE=YES
++ BENCHMARK_OS=YES
++ BENCHMARK_SYSCALL=
++ BENCHMARK_SELECT=
++ BENCHMARK_PROC=
++ BENCHMARK_CTX=
++ BENCHMARK_PAGEFAULT=
++ BENCHMARK_FILE=
++ BENCHMARK_MMAP=
++ BENCHMARK_PIPE=
++ BENCHMARK_UNIX=
++ BENCHMARK_UDP=
++ BENCHMARK_TCP=
++ BENCHMARK_CONNECT=
++ BENCHMARK_RPC=
++ BENCHMARK_HTTP=
++ BENCHMARK_BCOPY=
++ BENCHMARK_MEM=
++ BENCHMARK_OPS=
+ '[' '!' -d ../results/ ']'
+ RESULTS=../results//debian.0
+ '[' -f ../results//debian.0 ']'
+ cd ../bin/
+ PATH=.:/home/xiaojun/spack/opt/spack/linux-debian10-aarch64/gcc-9.3.0/lmbench-master-hjvodsgdjzuqyxn4tk47ell434eqylgi/bin:/home/xiaojun/spack/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/home/xiaojun/spack/spack/bin:/home/xiaojun/spack/opt/spack/linux-centos8-aarch64/gcc-8.2.1/py-flake8-3.7.8-3l5xcyug2ebxiflw5g3lvf35ep2xjnki/bin:/home/xiaojun/spack/spack/bin:/home/xiaojun/spack/opt/spack/linux-centos8-aarch64/gcc-8.2.1/py-flake8-3.7.8-3l5xcyug2ebxiflw5g3lvf35ep2xjnki/bin
+ export PATH
+ export SYNC_MAX
+ export OUTPUT
+ lmbench CONFIG.debian
results: line 30: ../../results//debian.0: No such file or directory
+ '[' Xno = Xyes ']'
+ exit 0
```

I can work around it by using this patch:
```
diff --git a/scripts/results b/scripts/results
index cd07c15..282ed19 100755
--- a/scripts/results
+++ b/scripts/results
@@ -27,7 +27,7 @@ cd ../bin/$OS
PATH=.:${PATH}; export PATH
export SYNC_MAX
export OUTPUT
-lmbench $CONFIG 2>../${RESULTS}
+lmbench $CONFIG 2>${RESULTS}

if [ X$MAIL = Xyes ]
then echo Mailing results
```

But maybe we need a better patch to fix this issue?