tests: work around zsh use of $options variable.

[Ralf Wildenhues]

../../libtool/tests/getopt-m4sh.at:93: $SHELL ./options -fvi
+ /usr/local/bin/zsh ./options -fvi
--- /dev/null   2010-09-12 14:28:42.575801479 +0000
+++ /tmp/build/tests/testsuite.dir/at-groups/1/stderr 2010-09-12 
14:28:42.634930285 +0000
@@ -0,0 +1,2 @@
+./options:950: options: attempt to set associative array to scalar
+./options:981: options: attempt to set associative array to scalar
--- expout      2010-09-12 14:28:41.558461981 +0000
+++ /tmp/build/tests/testsuite.dir/at-groups/1/stdout 2010-09-12 
14:28:42.560506110 +0000
@@ -1 +0,0 @@
- force verbose install
../../libtool/tests/getopt-m4sh.at:93: exit code was 1, expected 0
1. getopt-m4sh.at:85:  FAILED (getopt-m4sh.at:93)


Fixed as below, fixing test failures 1-6.  There are still failures of
9, 10, and 19 with this shell, but I haven't analyzed them yet.

I still need to write a patch for autoconf.texi, but for that I'd like
a confirmation from the man page.  Try finding something related to
"\<options\>" quickly ...  :-/

Cheers,
Ralf

    tests: work around zsh use of $options variable.
    
    * tests/getopt-m4sh.at: Rename $options to $opts, the former is
    special for zsh 4.3.10.

diff --git a/tests/getopt-m4sh.at b/tests/getopt-m4sh.at
index 1c2ac26..75a7bf6 100644
--- a/tests/getopt-m4sh.at
+++ b/tests/getopt-m4sh.at
@@ -37,14 +37,14 @@ AT_DATA([options.m4sh],
 nl='
 '
 list=
-options=
+opts=
 M4SH_GETOPTS(
   [a!],        [--append],     [],     [func_append list "$optarg$nl"],
-  [f], [--force],      [],     [options="$options force"],
-  [i], [--install],    [],     [options="$options install"],
-  [v], [--verbose],    [],     [options="$options verbose"],
-  [!], [--ltdl],       [false],[options="$options ltdl=$optarg"],
-[echo "$list" $options])
+  [f], [--force],      [],     [opts="$opts force"],
+  [i], [--install],    [],     [opts="$opts install"],
+  [v], [--verbose],    [],     [opts="$opts verbose"],
+  [!], [--ltdl],       [false],[opts="$opts ltdl=$optarg"],
+[echo "$list" $opts])
 ]])
 m4_pattern_forbid([m4_include])
 m4_pattern_forbid([AS_INIT])