[gtk+] Fix the build

[Matthias Clasen <matthiasc src gnome org>]

commit 4b2dc1e38bded387aa6a5cef0a6065a582ac1f51
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Aug 4 00:20:40 2014 +0200

    Fix the build
    
    Quoting accident. "echo -e" is not a command that the shell knows,
    echo -e is.

 gtk/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 2dac40d..2f74d2e 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -22,7 +22,7 @@ SUBDIRS = inspector native .
 if OS_DARWIN
   ECHO="echo"
 else
-  ECHO="echo -e"
+  ECHO=echo -e
 endif
 
 if HAVE_CLOUDPRINT