Workaround for ash braindamage

[Pavel Roskin]

Hello!

When I run this little script under ash 0.2 it says me "I'm bad":

#! /bin/sh
false
a=b || echo "I'm bad"

As far as I understand variable assignments don't affect the current error
code.

Actually, there is no point in checking the error code form assignments.
So this patch needs to be applied.

After applying this patch "CONFIG_SHELL=ash ./testsuite" passes all tests!

ChangeLog:
        * acgeneral.m4 (_AC_SHELL_TMPDIR): Don't check status of variable
        assignment - it's undefined in ash.

Regards,
Pavel Roskin

================================
Index: acgeneral.m4
--- acgeneral.m4        Wed Sep 20 12:31:57 2000
+++ acgeneral.m4        Wed Sep 20 15:02:10 2000
@@ -789,7 +789,8 @@
   test -n "$tmp" && test -d "$tmp"
 }  ||
 {
-  tmp=$TMPDIR/$1$$-$RANDOM && (umask 077 && mkdir $tmp)
+  tmp=$TMPDIR/$1$$-$RANDOM
+  umask 077 && mkdir $tmp
 } ||
 {
    echo "$me: cannot create a temporary directory in $TMPDIR" >&2
================================