Lots of Win32 fixes for DTLS.

1. "unsigned long long" isn't portable changed: to BN_ULLONG.
2. The LL prefix isn't allowed in VC++ but it isn't needed where it is used.
2. Avoid lots of compiler warnings about signed/unsigned mismatches.
3. Include new library directory pqueue in mk1mf build system.
4. Update symbols.

crypto/pqueue/pqueue.c

diff --git a/crypto/pqueue/pqueue.c b/crypto/pqueue/pqueue.c
index 4cd9987..f4fa37f 100644
--- a/crypto/pqueue/pqueue.c
+++ b/crypto/pqueue/pqueue.c
@@ -57,8 +57,9 @@
  *
  */
 
+#include "cryptlib.h"
+#include <openssl/bn.h>
 #include "pqueue.h"
-#include "crypto.h"
 
 typedef struct _pqueue
 	{
@@ -67,7 +68,7 @@
 	} pqueue_s;
 
 pitem *
-pitem_new(unsigned long long priority, void *data)
+pitem_new(BN_ULLONG priority, void *data)
 	{
 	pitem *item = (pitem *) OPENSSL_malloc(sizeof(pitem));
 	if (item == NULL) return NULL;
@@ -160,7 +161,7 @@
 	}
 
 pitem *
-pqueue_find(pqueue_s *pq, unsigned long long priority)
+pqueue_find(pqueue_s *pq, BN_ULLONG priority)
 	{
 	pitem *next, *prev = NULL;
 	pitem *found = NULL;

crypto/pqueue/pqueue.h

diff --git a/crypto/pqueue/pqueue.h b/crypto/pqueue/pqueue.h
index 2245950..2ac31e2 100644
--- a/crypto/pqueue/pqueue.h
+++ b/crypto/pqueue/pqueue.h
@@ -68,14 +68,14 @@
 
 typedef struct _pitem
 	{
-	unsigned long long priority;
+	BN_ULLONG priority;
 	void *data;
 	struct _pitem *next;
 	} pitem;
 
 typedef struct _pitem *piterator;
 
-pitem *pitem_new(unsigned long long priority, void *data);
+pitem *pitem_new(BN_ULLONG priority, void *data);
 void   pitem_free(pitem *item);
 
 pqueue pqueue_new(void);
@@ -84,7 +84,7 @@
 pitem *pqueue_insert(pqueue pq, pitem *item);
 pitem *pqueue_peek(pqueue pq);
 pitem *pqueue_pop(pqueue pq);
-pitem *pqueue_find(pqueue pq, unsigned long long priority);
+pitem *pqueue_find(pqueue pq, BN_ULLONG priority);
 pitem *pqueue_iterator(pqueue pq);
 pitem *pqueue_next(piterator *iter);