[Piglit] [PATCH 5/6] cmake: Remove the REQUIRED flag for PNG

[groleo at gmail.com]

From: Adrian Marius Negreanu <adrian.m.negreanu at intel.com>

I haven't found any references to png, except the README file,
so I guess it's ok to remove the REQUIRED flag.

Signed-off-by: Adrian Marius Negreanu <adrian.m.negreanu at intel.com>
---
:100644 100644 719cda1... b48fb5f... M	CMakeLists.txt
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 719cda1..b48fb5f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@ project (piglit)
 
 find_package(TIFF)
 find_package(GLUT REQUIRED)
-find_package(PNG REQUIRED)
+find_package(PNG)
 find_package(X11)
 
 
-- 
1.8.0