- unit test for negative cache, stress tests the refcounting.

- fix for refcounting error that could cause fptr_wlist fatal exit
	  in the negative cache rbtree (upcoming 1.1 feature). (Thanks to 
	  Attila Nagy for testing).
	- nicer comments in cachedump about failed RR to string conversion.


git-svn-id: file:///svn/unbound/trunk@1342 be551aaa-1e26-0410-a405-d3ace91eadb9

testcode/unitmain.c

@@ -413,6 +413,7 @@ main(int argc, char* argv[])
 	printf("Start of %s unit test.\n", PACKAGE_STRING);
 	ERR_load_crypto_strings();
 	checklock_start();
+	neg_test();
 	rnd_test();
 	verify_test();
 	net_test();