[devel] Don't display test results (except PASS/FAIL) when running "make test".

Instead put them in pngtest-log.txt

CHANGES

diff --git a/CHANGES b/CHANGES
index b89363b..71e7fd4 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3105,6 +3105,9 @@
     or warnings.
   Removed references to pngvcrd.c and pnggccrd.c from the vstudio project.
   Updated "libpng14" to "libpng15" in the visualc71 project.
+  Enabled the strip16 tests in pngvalid.`
+  Don't display test results (except PASS/FAIL) when running "make test".
+    Instead put them in pngtest-log.txt
 
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