Update CMake files after switch from CppUnit to Catch

Don't look for CppUnit library nor build it any longer, but just use the
Catch headers under 3rdparty/catch.

build/cmake/modules/Findcppunit.cmake

@@ -1,77 +0,0 @@
-# - try to find cppunit library
-#
-# Cache Variables: (probably not for direct use in your scripts)
-#  CPPUNIT_INCLUDE_DIR
-#  CPPUNIT_LIBRARY
-#
-# Non-cache variables you might use in your CMakeLists.txt:
-#  CPPUNIT_FOUND
-#  CPPUNIT_INCLUDE_DIRS
-#  CPPUNIT_LIBRARIES
-#
-# Requires these CMake modules:
-#  SelectLibraryConfigurations (included with CMake >= 2.8.0)
-#  FindPackageHandleStandardArgs (known included with CMake >=2.6.2)
-#
-# Original Author:
-# 2009-2011 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
-# http://academic.cleardefinition.com
-# Iowa State University HCI Graduate Program/VRAC
-#
-# Copyright Iowa State University 2009-2011.
-# Distributed under the Boost Software License, Version 1.0.
-# (See accompanying file LICENSE_1_0.txt or copy at
-# http://www.boost.org/LICENSE_1_0.txt)
-
-set(CPPUNIT_ROOT_DIR
-	"${CPPUNIT_ROOT_DIR}"
-	CACHE
-	PATH
-	"Directory to search")
-
-find_library(CPPUNIT_LIBRARY_RELEASE
-	NAMES
-	cppunit
-	HINTS
-	"${CPPUNIT_ROOT_DIR}"
-    "${CPPUNIT_ROOT_DIR}/lib")
-
-find_library(CPPUNIT_LIBRARY_DEBUG
-	NAMES
-	cppunitd
-	HINTS
-	"${CPPUNIT_ROOT_DIR}"
-    "${CPPUNIT_ROOT_DIR}/lib")
-
-include(SelectLibraryConfigurations)
-select_library_configurations(CPPUNIT)
-
-# Might want to look close to the library first for the includes.
-get_filename_component(_libdir "${CPPUNIT_LIBRARY_RELEASE}" PATH)
-
-find_path(CPPUNIT_INCLUDE_DIR
-	NAMES
-	cppunit/TestCase.h
-	HINTS
-	"${_libdir}/.."
-	PATHS
-	"${CPPUNIT_ROOT_DIR}"
-	PATH_SUFFIXES
-	include/)
-
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(cppunit
-	DEFAULT_MSG
-	CPPUNIT_LIBRARY
-	CPPUNIT_INCLUDE_DIR)
-
-if(CPPUNIT_FOUND)
-	set(CPPUNIT_LIBRARIES ${CPPUNIT_LIBRARY} ${CMAKE_DL_LIBS})
-	set(CPPUNIT_INCLUDE_DIRS "${CPPUNIT_INCLUDE_DIR}")
-	mark_as_advanced(CPPUNIT_ROOT_DIR)
-endif()
-
-mark_as_advanced(CPPUNIT_INCLUDE_DIR
-	CPPUNIT_LIBRARY_RELEASE
-	CPPUNIT_LIBRARY_DEBUG)