Fix to character class handling.

With this, NQP self-hosted on JVM can do tests 1..20 from t/nqp with
only two failures.

src/org/perl6/nqp/runtime/Ops.java

@@ -2288,7 +2288,7 @@ public static long iscclass(long cclass, String target, long offset) {
         	return test == '_' || Character.isLetterOrDigit(test) ? 1 : 0;
         case CCLASS_NEWLINE:
         	return (Character.getType(test) == Character.LINE_SEPARATOR) ||
-        			(test == '\n')
+        			(test == '\n' || test == '\r')
         			? 1 : 0;
         case CCLASS_ALPHABETIC:
         	return Character.isAlphabetic(test) ? 1 : 0;