Add explanations for new configure switches in binutils pass 2

git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/cross2@11944 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/binutils-pass2.xml

@@ -63,12 +63,19 @@ cd       build</userinput></screen>
       <title>The meaning of the new configure options:</title>
 
       <varlistentry>
-        <term><parameter>--host=$LFS_TGT</parameter></term>
+        <term><parameter>--enable-shared</parameter></term>
         <listitem>
-          <para>This tells the configure script that we want to build
-          this pass of binutils for the $LFS_TGT machine, using our just
-          built cross-compiler.  This prevents the linker from searching
-          through library directories on the host.</para>
+          <para>Builds <filename
+          class="libraryfile">libbfd</filename> as a shared library.</para>
+        </listitem>
+      </varlistentry>
+
+
+      <varlistentry>
+        <term><parameter>--enable-64-bit-bfd</parameter></term>
+        <listitem>
+          <para>Enables 64-bit support (on hosts with narrower word sizes).
+          May not be needed on 64-bit systems, but does no harm.</para>
         </listitem>
       </varlistentry>