InnoDB: Remove unreferenced debug functions from non-debug builds.

innobase/buf/buf0buf.c:
  Remove buf_print() and buf_validate() unless #ifdef UNIV_DEBUG
innobase/buf/buf0lru.c:
  Remove buf_LRU_print() and buf_LRU_validate() unless #ifdef UNIV_DEBUG
innobase/include/buf0buf.h:
  Remove buf_print() and buf_validate() unless #ifdef UNIV_DEBUG
innobase/include/buf0lru.h:
  Remove buf_LRU_print() and buf_LRU_validate() unless #ifdef UNIV_DEBUG
innobase/include/rem0rec.h:
  rec_offs_comp(): Correct the comment about return value.

innobase/buf/buf0buf.c

@@ -1947,6 +1947,7 @@ buf_pool_invalidate(void)
 	mutex_exit(&(buf_pool->mutex));
 }
 
+#ifdef UNIV_DEBUG
 /*************************************************************************
 Validates the buffer buf_pool data structure. */
 
@@ -2146,6 +2147,7 @@ buf_print(void)
 
 	ut_a(buf_validate());
 }	
+#endif /* UNIV_DEBUG */
 
 /*************************************************************************
 Returns the number of latched pages in the buffer pool. */

innobase/buf/buf0lru.c

@@ -920,6 +920,7 @@ buf_LRU_block_free_hashed_page(
 	buf_LRU_block_free_non_file_page(block);
 }
 
+#ifdef UNIV_DEBUG
 /**************************************************************************
 Validates the LRU list. */
 
@@ -1050,3 +1051,4 @@ buf_LRU_print(void)
 
 	mutex_exit(&(buf_pool->mutex));
 }
+#endif /* UNIV_DEBUG */

innobase/include/buf0buf.h

@@ -480,12 +480,20 @@ buf_pool_is_block(
 /*==============*/
 			/* out: TRUE if pointer to block */
 	void*	ptr);	/* in: pointer to memory */
+#ifdef UNIV_DEBUG
 /*************************************************************************
 Validates the buffer pool data structure. */
 
 ibool
 buf_validate(void);
 /*==============*/
+/*************************************************************************
+Prints info of the buffer pool data structure. */
+
+void
+buf_print(void);
+/*============*/
+#endif /* UNIV_DEBUG */
 /************************************************************************
 Prints a page to stderr. */
 
@@ -494,12 +502,6 @@ buf_page_print(
 /*===========*/
 	byte*	read_buf);	/* in: a database page */
 /*************************************************************************
-Prints info of the buffer pool data structure. */
-
-void
-buf_print(void);
-/*============*/
-/*************************************************************************
 Returns the number of latched pages in the buffer pool. */
 
 ulint

innobase/include/buf0lru.h

@@ -122,6 +122,7 @@ void
 buf_LRU_make_block_old(
 /*===================*/
 	buf_block_t*	block);	/* in: control block */
+#ifdef UNIV_DEBUG
 /**************************************************************************
 Validates the LRU list. */
 
@@ -134,6 +135,7 @@ Prints the LRU list. */
 void
 buf_LRU_print(void);
 /*===============*/
+#endif /* UNIV_DEBUG */
 
 #ifndef UNIV_NONINL
 #include "buf0lru.ic"

innobase/include/rem0rec.h

@@ -300,7 +300,7 @@ UNIV_INLINE
 ulint
 rec_offs_comp(
 /*==========*/
-				/* out: TRUE if compact format */
+				/* out: nonzero if compact format */
 	const ulint*	offsets);/* in: array returned by rec_get_offsets() */
 /**********************************************************
 Returns nonzero if the extern bit is set in nth field of rec. */