[jhbuild] gudev: ensure autoreconf works properly

[Ryan Lortie <ryanl src gnome org>]

commit e1ea792523fc163d77a151490f221581cb986c31
Author: Ryan Lortie <desrt desrt ca>
Date:   Sat Feb 18 12:57:23 2012 +0100

    gudev: ensure autoreconf works properly
    
    We modify the udev build system with a patch, so we need to autoreconf.
    Unfortunately libtool doesn't like when the first autogen is done on one
    version and autoreconf is done again with a different version.
    
    To avoid that issue, nuke the .m4 caches so they all get rebuilt using
    the same libtool version.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=670343

 patches/gudev-173.patch |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/patches/gudev-173.patch b/patches/gudev-173.patch
index bbd7c60..b8d52ef 100644
--- a/patches/gudev-173.patch
+++ b/patches/gudev-173.patch
@@ -1,3 +1,16 @@
+diff --git a/autogen.sh b/autogen.sh
+index a0c007a..cef6585 100644
+--- a/autogen.sh
++++ b/autogen.sh
+@@ -1,6 +1,8 @@
+ #!/bin/sh -e
+ 
++rm -fr m4 aclocal.m4
++mkdir m4
+ gtkdocize
+ autoreconf --install --symlink
+ 
+ MYCFLAGS="-g -Wall \
 diff --git a/Makefile.am b/Makefile.am
 index a0c007a..cef6585 100644
 --- a/Makefile.am