[gnome-power-manager/gnome-2-26] Create an empty .gitignore file in m4 to ensure the directory is created on fresh checkout

[Richard Hughes <rhughes src gnome org>]

commit 7696fe557af8749e8b94e7c9006f47d58f8e83bf
Author: Richard Hughes <richard hughsie com>
Date:   Tue Apr 21 12:29:53 2009 +0100

    Create an empty .gitignore file in m4 to ensure the directory is created on fresh checkout
---
 0 files changed, 0 insertions(+), 0 deletions(-)

diff --git a/m4/.gitignore b/m4/.gitignore
new file mode 100644
index 0000000..e69de29