refs #5727 dont allow upserts with secondary keys and other issues raised during a code review

git-svn-id: file:///svn/mysql/tokudb-engine/tokudb-engine@51076 c7de825b-a66e-492c-adef-691d508d4ae1

storage/tokudb/hatoku_defines.h

@@ -118,6 +118,7 @@ extern ulong tokudb_debug;
 #define TOKUDB_DEBUG_CHECK_KEY 1024
 #define TOKUDB_DEBUG_HIDE_DDL_LOCK_ERRORS 2048
 #define TOKUDB_DEBUG_ALTER_TABLE_INFO 4096
+#define TOKUDB_DEBUG_UPSERT 8192
 
 #define TOKUDB_TRACE(f, ...) \
     printf("%d:%s:%d:" f, my_tid(), __FILE__, __LINE__, ##__VA_ARGS__);