[Xcb] [PATCH xcb-util-*] Use an absolute URL for the m4 submodule

[Dirk Wallenstein]

A relative submodule URL requires m4 duplicates relative to every fork or local
mirror of this module.  To select a different protocol with an absolute
submodule URL, the url.<base>.insteadOf configuration option can be used.

Signed-off-by: Dirk Wallenstein <halsmit at t-online.de>
---
I give it at try.  Please consider it.  This applies to all util-* modules.

 .gitmodules |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/.gitmodules b/.gitmodules
index 459533d..cff1b86 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "m4"]
 	path = m4
-	url = ../util-common-m4.git
+	url = git://anongit.freedesktop.org/xcb/util-common-m4.git
-- 
1.7.4