[GraphicsMagick/el6] restore quantum_depth conditional

[Rex Dieter]

commit b35cb3392abb4352f46c4a0548df1942d465a784
Author: Rex Dieter <rdieter at fedoraproject.org>
Date:   Mon Aug 20 22:38:35 2012 -0500

    restore quantum_depth conditional

 GraphicsMagick.spec |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/GraphicsMagick.spec b/GraphicsMagick.spec
index 5db7e0c..49f82eb 100644
--- a/GraphicsMagick.spec
+++ b/GraphicsMagick.spec
@@ -1,5 +1,7 @@
 
+%if 0%{?fedora} > 15 || 0%{?rhel} > 6
 %global quantum_depth 16
+%endif
 
 %if 0%{?fedora} > 16
 %global lcms lcms2