Fix tests under Windows, fix test.javac11 and test.javac14, fix issue #1745

The change of the TestConfiguration.java is based on the fact that
Git for Windows is configured with 'core.autocrlf=true' by default.

buildScripts/tests.ant.xml

@@ -119,6 +119,7 @@ This buildfile is part of projectlombok.org. It takes care of compiling and runn
 				<classpath refid="cp.stripe" />
 				<classpath location="build/lombok" />
 				<classpath location="build/tests" />
+				<classpath location="build/teststubs" />
 				<test name="lombok.TestJavac" />
 			</junit>
 		</sequential>