Add an extra layer of quoting to ltmain.sh sanity check.

--- a/configure	2005-05-07 14:19:31.000000000 +0200
+++ b/configure	2015-02-10 11:16:32.456146934 +0100
@@ -6266,7 +6266,7 @@
   exit 1
 fi
 gentoo_lt_version="1.5.16"
-gentoo_ltmain_version=`grep '^[:space:]*VERSION=' $ltmain | sed -e 's|^[:space:]*VERSION=||'`
+gentoo_ltmain_version=`grep '^[[:space:]]*VERSION=' $ltmain | sed -e 's|^[[:space:]]*VERSION=||'`
 if test "$gentoo_lt_version" != "$gentoo_ltmain_version"; then
   echo "$as_me:$LINENO: result: no" >&5
 echo "${ECHO_T}no" >&6
--- a/aclocal.m4	2005-05-07 14:19:25.000000000 +0200
+++ b/aclocal.m4	2015-02-10 11:16:15.352030318 +0100
@@ -246,7 +246,7 @@
   exit 1
 fi
 gentoo_lt_version="1.5.16"
-gentoo_ltmain_version=`grep '^[[:space:]]*VERSION=' $ltmain | sed -e 's|^[[:space:]]*VERSION=||'`
+gentoo_ltmain_version=`[grep '^[[:space:]]*VERSION=' $ltmain | sed -e 's|^[[:space:]]*VERSION=||']`
 if test "$gentoo_lt_version" != "$gentoo_ltmain_version"; then
   AC_MSG_RESULT(no)
   echo
--- a/libcpufreq/configure	2005-05-07 14:19:31.000000000 +0200
+++ b/libcpufreq/configure	2015-02-10 11:16:32.456146934 +0100
@@ -6266,7 +6266,7 @@
   exit 1
 fi
 gentoo_lt_version="1.5.16"
-gentoo_ltmain_version=`grep '^[:space:]*VERSION=' $ltmain | sed -e 's|^[:space:]*VERSION=||'`
+gentoo_ltmain_version=`grep '^[[:space:]]*VERSION=' $ltmain | sed -e 's|^[[:space:]]*VERSION=||'`
 if test "$gentoo_lt_version" != "$gentoo_ltmain_version"; then
   echo "$as_me:$LINENO: result: no" >&5
 echo "${ECHO_T}no" >&6
--- a/libcpufreq/aclocal.m4	2005-05-07 14:19:25.000000000 +0200
+++ b/libcpufreq/aclocal.m4	2015-02-10 11:16:15.352030318 +0100
@@ -246,7 +246,7 @@
   exit 1
 fi
 gentoo_lt_version="1.5.16"
-gentoo_ltmain_version=`grep '^[[:space:]]*VERSION=' $ltmain | sed -e 's|^[[:space:]]*VERSION=||'`
+gentoo_ltmain_version=`[grep '^[[:space:]]*VERSION=' $ltmain | sed -e 's|^[[:space:]]*VERSION=||']`
 if test "$gentoo_lt_version" != "$gentoo_ltmain_version"; then
   AC_MSG_RESULT(no)
   echo

<div class='path'>path: <a href='/guix/log/?id=1230a07fea29914a41067ca5b570a698b3efd684'>root</a>/<a href='/guix/log/gnu?id=1230a07fea29914a41067ca5b570a698b3efd684'>gnu</a>/<a href='/guix/log/gnu/services?id=1230a07fea29914a41067ca5b570a698b3efd684'>services</a>/<a href='/guix/log/gnu/services/rsync.scm?id=1230a07fea29914a41067ca5b570a698b3efd684'>rsync.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/rsync.scm?id=1230a07fea29914a41067ca5b570a698b3efd684&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-03-04 15:22:58 +0100'>2019-03-04</span></td><td><a href='/guix/commit/gnu/services/rsync.scm?id=56a93cb975ddc33d50183fb122e2aafda026f18e'>services: Use 'file-append' for user account shells.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/cuirass.scm (cuirass-account): Use 'file-append' instead
of #~(string-append #$shadow "/sbin/nologin"<tr><td><span title='2021-09-05 11:01:45 +0200'>2021-09-05</span></td><td><a href='/guix/commit/gnu/packages/patches/pipewire-0.2.7-fno-common.patch?id=48bd27863ff5d6445dd393294fc6aec1f93a0d6a'>gnu: pipewire: Fix build with GCC 10.</a><span class='msg-avail'<tr><td><span title='2017-09-23 21:07:27 +0100'>2017-09-23</span></td><td><a href='/guix/commit/gnu/services/rsync.scm?id=9db7e9be59820190a97de22ba72e71fa25f9d168'>gnu: Add rsync service.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/guix.texi (Networking Services): Add rsync service documentation.
* gnu/services/rsync.scm (&lt;rsync-configuration&gt;): New file.
* gnu/tests/rsync.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add new files.

Signed-off-by: Christopher Baines &lt;mail@cbaines.net&gt;
</span></span></td><td>Oleg Pykhalov</td></tr>