Convert "skin" to "tool" in various places;  almost entirely within comments,
nothing that will affect code.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2217 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/memcheck/mac_shared.h b/memcheck/mac_shared.h
index f36175c..c968a08 100644
--- a/memcheck/mac_shared.h
+++ b/memcheck/mac_shared.h
@@ -154,7 +154,7 @@
    MAC_Chunk;
 
 /*------------------------------------------------------------*/
-/*--- Profiling of skins and memory events                 ---*/
+/*--- Profiling of tools and memory events                 ---*/
 /*------------------------------------------------------------*/
 
 typedef 
@@ -163,7 +163,7 @@
       VgpSetMem,
       VgpESPAdj
    } 
-   VgpSkinCC;
+   VgpToolCC;
 
 /* Define to collect detailed performance info. */
 /* #define MAC_PROFILE_MEMORY */
@@ -270,7 +270,7 @@
 /* For tracking malloc'd blocks */
 extern VgHashTable MAC_(malloc_list);
 
-/* Function pointers for the two skins to track interesting events. */
+/* Function pointers for the two tools to track interesting events. */
 extern void (*MAC_(new_mem_heap)) ( Addr a, UInt len, Bool is_inited );
 extern void (*MAC_(ban_mem_heap)) ( Addr a, UInt len );
 extern void (*MAC_(die_mem_heap)) ( Addr a, UInt len );