Add mq (message queue) to test infrastructure.

Add mtx (mutex) to test infrastructure, in order to avoid bootstrapping
complications that would result from directly using malloc_mutex.

Rename test infrastructure's thread abstraction from je_thread to thd.

Fix some header ordering issues.

include/jemalloc/internal/hash.h

@@ -43,14 +43,14 @@ JEMALLOC_INLINE uint32_t
 hash_get_block_32(const uint32_t *p, int i)
 {
 
-	return p[i];
+	return (p[i]);
 }
 
 JEMALLOC_INLINE uint64_t
 hash_get_block_64(const uint64_t *p, int i)
 {
 
-	return p[i];
+	return (p[i]);
 }
 
 JEMALLOC_INLINE uint32_t
@@ -63,7 +63,7 @@ hash_fmix_32(uint32_t h)
 	h *= 0xc2b2ae35;
 	h ^= h >> 16;
 
-	return h;
+	return (h);
 }
 
 JEMALLOC_INLINE uint64_t
@@ -76,7 +76,7 @@ hash_fmix_64(uint64_t k)
 	k *= QU(0xc4ceb9fe1a85ec53LLU);
 	k ^= k >> 33;
 
-	return k;
+	return (k);
 }
 
 JEMALLOC_INLINE uint32_t
@@ -127,7 +127,7 @@ hash_x86_32(const void *key, int len, uint32_t seed)
 
 	h1 = hash_fmix_32(h1);
 
-	return h1;
+	return (h1);
 }
 
 UNUSED JEMALLOC_INLINE void

include/jemalloc/internal/jemalloc_internal_defs.h.in

@@ -1,3 +1,5 @@
+#ifndef JEMALLOC_INTERNAL_DEFS_H_
+#define	JEMALLOC_INTERNAL_DEFS_H_
 /*
  * If JEMALLOC_PREFIX is defined via --with-jemalloc-prefix, it will cause all
  * public APIs to be prefixed.  This makes it possible, with some care, to use
@@ -193,3 +195,5 @@
 
 /* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */
 #undef LG_SIZEOF_INTMAX_T
+
+#endif /* JEMALLOC_INTERNAL_DEFS_H_ */

include/jemalloc/internal/tsd.h

@@ -348,7 +348,7 @@ a_name##_tsd_get_wrapper(void)						\
 		wrapper = tsd_init_check_recursion(			\
 		    &a_name##_tsd_init_head, &block);			\
 		if (wrapper)						\
-		    return wrapper;					\
+		    return (wrapper);					\
 		wrapper = (a_name##_tsd_wrapper_t *)			\
 		    malloc_tsd_malloc(sizeof(a_name##_tsd_wrapper_t));	\
 		block.data = wrapper;					\