INSTALL-WIN32.txt: added some info to build cppunit as a DLL.

* include/cppunit/config-msvc6.h: added definition of macro CPPUNIT_API when
building or linking DLL. Defined CPPUNIT_BUILD_DLL when building, and
CPPUNIT_DLL when linking.

* include/cppunit/Portability.h: added empty definition of macro CPPUNIT_API
when not building or using CppUnit as a DLL. When any of those symbol is defined,
the symbol CPPUNIT_NEED_DLL_DECL is set to 1.

* include/cppunit/extensions/RepeatedTest.h:
* include/cppunit/extensions/TestDecorator.h:
* include/cppunit/extensions/TestSetUp.h:
* include/cppunit/TestCaller.h
* include/cppunit/extensions/TestFactory.h
* include/cppunit/extensions/TestFactoryRegistry.h
* include/cppunit/extensions/TypeInfoHelper.h
* include/cppunit/Asserter.h
* include/cppunit/Exception.h
* include/cppunit/NotEqualException.h
* include/cppunit/SourceLine.h
* include/cppunit/SynchronizedObject.h
* include/cppunit/Test.h
* include/cppunit/TestAssert.h
* include/cppunit/TestCase.h
* include/cppunit/TestFailure.h
* include/cppunit/TestListener.h
* include/cppunit/TestResult.h
* include/cppunit/TestSuite.h
* include/cppunit/CompilerOutputter.h
* include/cppunit/Outputter.h
* include/cppunit/TestResultCollector.h
* include/cppunit/TestSuccessListener.h
* include/cppunit/TextOutputter.h
* include/cppunit/TextTestProgressListener.h
* include/cppunit/TextTestResult.h
* include/cppunit/TextTestRunner.h
* include/cppunit/XmlOutputter.h: added CPPUNIT_API for DLL export.

* include/cppunit/TestSuite.h:
* src/cppunit/TestSuite.cpp: reindented

* include/cppunit/extensions/TestSetUp.h:
* src/cppunit/TestSetUp.cpp: added .cpp. extracted inline method and moved them
to cpp file.

added project cppunittest to examples/: unit tests to test cppunit. The
main file is CppUnitTestMain.cpp. Unit tests have been implemented
for TestCaller and TestListener.
* added project CppUnitTestApp to examples/msvc6: graphical runner for
cppunittest.
* added TestListener to TestResult. It is a port of junit TestListener.
* updated some .cvsignore to ignore files generated with VC++.