Merge branch 'defMeth-final' into build

Conflicts:
	src/test/java/com/puppycrawl/tools/checkstyle/grammars/java8/DefaulMethodsTest.java
	src/test/java/com/puppycrawl/tools/checkstyle/grammars/java8/MethodReferencesTest.java
	src/test/resources/com/puppycrawl/tools/checkstyle/grammars/java8/InputDefaultMethodsTest.java
	src/test/resources/com/puppycrawl/tools/checkstyle/grammars/java8/InputMethodReferencesTest.java