whatsnew: Use the <title> of the page for packages as package names

This is more consistent, and it reduces the number of different
translatable strings for translators.  Most of the package names in
whatsnew has already been aligned with <title>s, now make these two
"from ..." packages so.

chapter01/whatsnew.xml

@@ -153,7 +153,7 @@
       <para>Libcap-&libcap-version;</para>
     </listitem>-->
     <listitem>
-      <para>Libelf-&elfutils-version; (from elfutils)</para>
+      <para>Libelf from Elfutils-&elfutils-version;</para>
     </listitem>
     <!--<listitem>
       <para>Libffi-&libffi-version;</para>
@@ -252,7 +252,7 @@
       <para>Tzdata-&tzdata-version;</para>
     </listitem>-->
     <!--<listitem revision="sysv">
-       <para>Udev-&systemd-version; (from systemd)</para>
+      <para>Udev from Systemd-&systemd-version;</para>
     </listitem>-->
     <listitem>
       <para>Util-linux-&util-linux-version;</para>