Add --with-headers for glibc

Add a switch to glibc's configure, so that kernel API headers are sought in
/usr/include

was r11569.

appendices/dependencies.xml

@@ -244,7 +244,7 @@
 
         <seglistitem>
           <seg>Bash, Binutils, Bison, Coreutils, GCC, Glibc,
-          Grep, Make, 以及 Readline</seg>
+          Grep, Make, Perl, 以及 Readline</seg>
         </seglistitem>
       </segmentedlist>
 

chapter06/glibc.xml

@@ -117,6 +117,7 @@ cd       build</userinput></screen>
              --disable-werror                       \
              --enable-kernel=&min-kernel;                    \
              --enable-stack-protector=strong        \
+             --with-headers=/usr/include            \
              libc_cv_slibdir=/lib</userinput></screen>
 
    <variablelist>
@@ -153,6 +154,15 @@ cd       build</userinput></screen>
         </listitem>
       </varlistentry>
 
+      <varlistentry>
+        <term><parameter>--with-headers=/usr/include</parameter></term>
+        <listitem>
+          <para>该选项指定构建系统搜索内核 API 头文件的位置。
+          默认情况下，该位置是
+          <filename class="directory">/tools/include</filename>。</para>
+        </listitem>
+      </varlistentry>
+
       <varlistentry>
         <term><parameter>libc_cv_slibdir=/lib</parameter></term>
         <listitem>