Update changelog and buildpkg script.

ChangeLog

@@ -11,6 +11,7 @@ NVIDIA Texture Tools version 2.1.0
  * Select the fastest CUDA device.
  * Added support for saving PNGs by Frank Richter. Fixes issue 79 and 80.
  * Added gnome thumbnailer by Frank Richter. Fixes issue 82.
+ * Cleanup sources removing files that are not strictly required.
 
 NVIDIA Texture Tools version 2.0.4
  * Fix error in RGB format output; reported by jonsoh. See issue 49.

buildpkg

@@ -2,6 +2,6 @@
 
 tar zcvf nvidia-texture-tools-`cat VERSION`.tar.gz \
 	--exclude '.*' --exclude debian --exclude '*~' --exclude buildpkg \
-	--exclude build --exclude data --exclude tags --exclude Makefile \
+	--exclude 'build-*' --exclude data --exclude tags --exclude Makefile \
 	--exclude 'nvidia-texture-tools-*.tar.gz' \
 	--transform 's,^,nvidia-texture-tools/,' *