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
earch'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=a9ee95aec119601332875d9c4becef2331780fee'>root</a>/<a href='/guix/log/gnu?id=a9ee95aec119601332875d9c4becef2331780fee'>gnu</a>/<a href='/guix/log/gnu/packages?id=a9ee95aec119601332875d9c4becef2331780fee'>packages</a>/<a href='/guix/log/gnu/packages/lisp-check.scm?id=a9ee95aec119601332875d9c4becef2331780fee'>lisp-check.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/packages/lisp-check.scm?id=a9ee95aec119601332875d9c4becef2331780fee&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-08-08 10:31:10 +0200'>2023-08-08</span></td><td><a href='/guix/commit/gnu/packages/lisp-check.scm?id=661cd5772d84eb4c8c4c447bd84b67e8949880e1'>gnu: cl-clunit2: Update to 0.5.2-2.5e28343.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/lisp-check.scm (sbcl-clunit2): Update to 0.5.2-2.5e28343.
  [source, home-page]: Switch from Notabug to Codeberg.

Signed-off-by: Guillaume Le Vaillant &lt;glv@posteo.net&gt;
</span></span></td><td>cage</td></tr>
<tr><td><span title='2023-07-19 09:10:10 +0200'>2023-07-19</span></td><td><a href='/guix/commit/gnu/packages/lisp-check.scm?id=54a49cf1ccc9d2cf44e5de5bdd0ce5fc7c810fb0'>gnu: cl-lisp-unit2: Update to 0.9.4-0.b5aa17b.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/lisp-check.scm (sbcl-lisp-unit2): Update to 0.9.4-0.b5aa17b.

Signed-off-by: Guillaume Le Vaillant &lt;glv@posteo.net&gt;
</span></span></td><td>Andre A. Gomes</td></tr>
<tr><td><span title='2023-07-10 09:55:33 +0200'>2023-07-10</span></td><td><a href='/guix/commit/gnu/packages/lisp-check.scm?id=126a91888c921179e90090c4c023d6285bfd44a0'>gnu: cl-rove: Update to 0.10.0-1.6a5dfcd.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/lisp-check.scm (sbcl-rove): Update to 0.10.0-1.6a5dfcd.

Signed-off-by: Guillaume Le Vaillant &lt;glv@posteo.net&gt;
</span></span></td><td>Mike Delago</td></tr>