Implement WinNT condition variables, add semaphors

src/thread.c

@@ -68,6 +68,26 @@ void bh_mutex_free(bh_mutex_t *mutex)
     free(mutex);
 }
 
+bh_semaphore_t *bh_semaphore_new(int count)
+{
+    bh_semaphore_t *result;
+    
+    result = malloc(sizeof(*result));
+    if (result && bh_semaphore_init(result, count))
+    {
+        free(result);
+        result = NULL;
+    }
+    
+    return result;
+}
+
+void bh_semaphore_free(bh_semaphore_t *semaphore)
+{
+    bh_semaphore_destroy(semaphore);
+    free(semaphore);
+}
+
 bh_cond_t *bh_cond_new(void)
 {
     bh_cond_t *result;