patch explanation added

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@829 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter05/gzip-inst.xml

@@ -1,7 +1,9 @@
 <sect2>
 <title>Installation of Gzip</title>
 
-<para>Before Gzip is installed, the gzip patch file needs to be unpacked.</para>
+<para>Before Gzip is installed, the gzip patch file needs to be
+unpacked.  This patch file is necessary to avoid a conflict of variable
+names with glibc when compiling and linking statically.</para>
 
 <para><screen><userinput>patch -Np1 -i ../gzip-&gzip-version;.patch &amp;&amp;</userinput>
 <userinput>./configure --prefix=$LFS/usr &amp;&amp;</userinput>