DOH! Added the missing file, thanks for the heads up Gerard :)

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1816 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter05/grep-exp.xml

@@ -0,0 +1,10 @@
+<sect2>
+<title>Command explanations</title>
+
+<para><userinput>--disable-perl-regexp:</userinput> This configure option
+makes sure Grep is not linked against the PCRE library, which is often
+only available as a shared library in distributions. Not using this option
+might result in a compilation error.</para>
+
+</sect2>
+