$NetBSD: patch-cmake_modules_FindPNG_cmake,v 1.1 2012/04/30 01:59:14 dholland Exp $

Use the right library name for libpng.

--- cmake/modules/FindPNG.cmake~	2012-03-11 12:33:09.000000000 +0000
+++ cmake/modules/FindPNG.cmake
@@ -27,7 +27,7 @@ IF(WIN32)
 		SET(AQSIS_PNG_LIBRARY_NAMES png)
 	endif()
 ELSE(WIN32)
-	SET(AQSIS_PNG_LIBRARY_NAMES png)
+	SET(AQSIS_PNG_LIBRARY_NAMES png15)
 	SET(AQSIS_PNG_LIBRARIES_DIR CACHE PATH "Semi-colon separated list of paths to search for the png libraries")
 ENDIF(WIN32)