Use 8 bit per sample images in tests

In compare image tests, use the gs device tiff24nc instead of tiff12nc
since the 4 bit per sample images created by tiff12nc could sometimes
trigger a bug in tiffcmp.  Fixes #20.

1 files changed, 7 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index b3642dbb..cd185d0b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2013-11-21  Jay Berkenbilt  <ejb@ql.org>
+
+	* Change image comparison tests, which are disabled by default, to
+	use tiff files with 8 bits per sample rather than 4.  This works
+	around a bug in tiffcmp but also increases time and disk space for
+	image comparison tests.
+
 2013-10-28  Jay Berkenbilt  <ejb@ql.org>
 
 	* Fix MacOS compilation errors by adding a missing #include in a