Changed wording to be less confusing

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@775 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/glibc-inst.xml

@@ -2,8 +2,8 @@
 <title>Installation of Glibc</title>
 
 <para>
-Unpack the glibc-linuxthreads in the glibc-&glibc-version; directory, not in 
-/usr/src. 
+Once glibc has been unpacked as usual, unpack glibc-linuxthreads inside
+the glibc-&glibc-version; directory, not in /usr/src
 </para>
 
 <para>