CMake build system: Fix the "testclean" target

Regression caused by f9134384b7

This commit also makes the "testclean" target clean up the 4:1:1 test
images.  This was implemented in the autotools build system in
1f3635c496 but was left out of the CMake
build system due to an oversight.

CMakeLists.txt

@@ -866,7 +866,7 @@ foreach(libtype ${TEST_LIBTYPES})
 
 endforeach()
 
-add_custom_target(testclean COMMAND ${MD5CMP} -P
+add_custom_target(testclean COMMAND ${CMAKE_COMMAND} -P
   ${CMAKE_SOURCE_DIR}/cmakescripts/testclean.cmake)
 
 

cmakescripts/testclean.cmake

@@ -24,7 +24,12 @@ file(GLOB FILES
   *_440_*.png
   *_440_*.ppm
   *_440_*.jpg
-  *_440.yuv)
+  *_440.yuv
+  *_411_*.bmp
+  *_411_*.png
+  *_411_*.ppm
+  *_411_*.jpg
+  *_411.yuv)
 
 if(NOT FILES STREQUAL "")
   message(STATUS "Removing test files")