[cogl] build: Don't use bash string substitution in configure.ac

[Emmanuele Bassi <ebassi src gnome org>]

commit cb321e0e5f13cd0535f1a8260ae2ca6aafb0d26e
Author: Emmanuele Bassi <ebassi linux intel com>
Date:   Wed Jun 1 16:44:57 2011 +0100

    build: Don't use bash string substitution in configure.ac
    
    Use the shell-neutral version.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=651256

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index ca164b2..0b2beae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -241,7 +241,7 @@ AS_CASE(
 )
 
 # strip leading spaces
-COGL_EXTRA_CFLAGS="$COGL_EXTRA_CFLAGS ${MAINTAINER_CFLAGS/#  }"
+COGL_EXTRA_CFLAGS="$COGL_EXTRA_CFLAGS ${MAINTAINER_CFLAGS#*  }"
 
 
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