Correct the download URL for m4

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@7768 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

packages.ent

@@ -318,7 +318,7 @@
 
 <!ENTITY m4-version "1.4.5">
 <!ENTITY m4-size "479 KB">
-<!ENTITY m4-url "&gnu;m4/m4-&m4-version;.tar.gz">
+<!ENTITY m4-url "&gnu;m4/m4-&m4-version;.tar.bz2">
 <!ENTITY m4-md5 "8bcd8244d5bed9f8e2d5f05ad693b8b4">
 <!ENTITY m4-home "&gnu-software;m4/">
 <!ENTITY m4-ch5-du "4.4 MB">