tests/foreign.at port to libtool 1.5.2; plus a quoting fix

[Paul Eggert]

I installed this:

2004-03-29  Paul Eggert  <address@hidden>

        * tests/foreign.at (Libtool): Create an empty aclocal.m4, to
        pacify libtool 1.5.2.  Fix quoting problems in sed command.

Index: tests/foreign.at
===================================================================
RCS file: /cvsroot/autoconf/autoconf/tests/foreign.at,v
retrieving revision 1.20
diff -p -u -r1.20 foreign.at
--- tests/foreign.at    19 Mar 2004 08:57:51 -0000      1.20
+++ tests/foreign.at    30 Mar 2004 07:47:01 -0000
@@ -49,7 +49,7 @@ AC_CONFIG_AUX_DIR(.)
 AC_PROG_LIBTOOL
 ]])
 # Some libtoolize complain if you don't have an aclocal.m4.
-AT_CHECK([echo '# generated automatically by aclocal' > aclocal.m4])
+AT_CHECK([touch aclocal.m4])
 AT_CHECK([libtoolize], 0, [stdout], ignore)
 
 # Some broken libtoolize fail to install a functional config.guess.
@@ -58,7 +58,7 @@ AT_CHECK([./config.guess || exit 77], []
 # Make sure at-path contains something valid, and let the test suite
 # display it when verbose.  And fail, skipping would too easily hide
 # problems.
-AT_CHECK([sed -n ["s,^.*\`\(/[^']*\)'.*,\1,p"] stdout], 0, [stdout])
+AT_CHECK([sed -n ["s,^.*\`\\(/[^']*\\)'.*,\\1,p"] stdout], 0, [stdout])
 AT_CHECK([test -f "`cat stdout`"])
 
 # libtoolize installed everything but install-sh...