[devel] Revised CMakeLists.txt to account for new location of libpng-config.in

and libpng-pc.in
diff --git a/CHANGES b/CHANGES
index d0d9271..7451bee 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2363,6 +2363,8 @@
 version 1.4.0beta100 [November 14, 2009]
   Removed ASM builds from projects/visualc6 and projects/visualc71
   Removed scripts/makefile.nommx and makefile.vcawin32
+  Revised CMakeLists.txt to account for new location of libpng-config.in
+    and libpng-pc.in
 
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