CppUnit - C++ port of JUnit Code

* configure.in: added include/cppunit/config/Makefile and
include/cppunit/plugin/Makefile to the list of target.

* doc/CppUnit-win.dox: enabled generation of HTML Help documentation.

* include/cppunit/config/Makefile.am:
* include/cppunit/plugin/Makefile.am: added.

* include/cppunit/config-bcb5.h:
* include/cppunit/config-msvc6.h:
* include/cppunit/config-mac.h: moved to include/cppunit/config/.

* include/cppunit/Portability.h: updated config files location. Added macros
CPPUNIT_STRINGIZE and CPPUNIT_JOIN (implementation adapted from boost.org).
Added macro CPPUNIT_MAKE_UNIQUE_NAME.

* include/cppunit/Test.h: modified methods order.

* include/cppunit/extensions/HelperMacros.h: renamed macro
__CPPUNIT_MAKE_UNIQUE_NAME to CPPUNIT_MAKE_UNIQUE_NAME and moved its
definition to include/cppunit/Portability.h.

* include/cppunit/extensions/TestDecorator.h: Inherits Test instead of TestLeaf.

* include/cppunit/plugin/DynamicLibraryManager.h:
* src/cppunit/DynamicLibraryManager.cpp: added. DLL manager (load & lookup
symbol).

* src/cppunit/BeOsDynamicLibraryManager.cpp:
* src/cppunit/UnixDynamicLibraryManager.cpp:
* src/cppunit/Win32DynamicLibraryManager.cpp: added. Implementation of
platform dependent methods of DynamicLibraryManager.

* include/cppunit/plugin/DynamicLibraryManagerException.h:
* src/cppunit/DynamicLibraryManagerException.cpp: added. Exception thrown
by DynamicLibraryManager.

* include/cppunit/plugin/TestPlugIn.h: added. CppUnitTestPlugIn interface
definition. Helper macros to implements plug-in.

* include/cppunit/plugin/TestPlugInSuite.h:
* src/cppunit/plugin/TestPlugInSuite.cpp: added. A suite to wrap a test
plug-in.

* include/cppunit/plugin/TestPlugInDefaultImpl.h:
* src/cppunit/TestPlugInDefaultImpl.cpp: added. A default implementation
of the test plug-in interface.

* src/msvc6/DllPlugInTester/DllPlugInTester.cpp: updated to use the
new TestPlugIn.

* examples/cppunittest/TestResultCollectorTest.cpp: fixed typo.