template method addTestCallerForException() which should solve the compilation
issue with Sun 5.0/6.0 compiler.
* include/cppunit/extensions/HelperMacros.h: updated against TestSuiteBuilder
change. Added CPPUNIT_TEST_CUSTOM and CPPUNIT_TEST_CUSTOMS to add custom
tests to the fixture suite.
* include/cppunit/extensions/TestNamer.h:
* src/cppunit/TestNamer.cpp: added, TestNamer to name test case and fixture.