See message in mysqlslap.c, but basically

1) Parsing now works
2) Options are safer, aka it doesn't kill the machine and it cleans up after itself
3) Option of --only-print added so that you can see what it does.
4) Tiny cleanup of the auto generate sql. A lot more needs to be done with this, for it to be very valuable. I suspect it doesn't work all that well.
5) Delimeter is now a single character. No good escaping going on.
6) You can now change which schema it is runninng against.

Now I think I can go make use of it! 

Though I need to add support for a "only run this many inserts, divide by the number of clients connecting, to really test scaling"



client/client_priv.h:
  Added new options for mysqlslap
client/mysqlslap.c:
  Lots of cleanup.
  
  Highlights:
  1) Parsing now works much better, though I suspect escaping issues still exist. All strings are parsed into a typedef called statement. This is a linked structure with each statement held in it. I added options for length so that when the time comes to fix this for binary data the guts of the main executing loop will not need to be changed
  2) Cleaned up options so that it will not destroy data by default and will clean up itself by default. So no leaving around of gobs of data.
  3) Added option of --only-print to see the SQL it would have executed
  4) Parsing handles whitespace trick (which will come back to bite someone I expect)
  5) Delimeter is now a single character
  6) All memory allocated should now be freed.
  7) Set defaults so that only a single run will occur if none are given.
  8) You can now change the schema that it runs against.
mysql-test/r/information_schema.result:
  Fix for Antony's merge
mysql-test/r/mysqlslap.result:
  New result set
  More testing
mysql-test/t/mysqlslap.test:
  More testing

client/client_priv.h

@@ -50,6 +50,8 @@ enum options_client
   OPT_NDBCLUSTER, OPT_NDB_CONNECTSTRING,
 #endif
   OPT_TRIGGERS,
+  OPT_MYSQL_ONLY_PRINT,
+  OPT_MYSQL_PRESERVE_SCHEMA_ENTER, OPT_MYSQL_PRESERVE_SCHEMA_EXIT,
   OPT_IGNORE_TABLE,OPT_INSERT_IGNORE,OPT_SHOW_WARNINGS,OPT_DROP_DATABASE,
   OPT_TZ_UTC, OPT_AUTO_CLOSE, OPT_CREATE_SLAP_SCHEMA,
   OPT_MYSQL_REPLACE_INTO, OPT_BASE64_OUTPUT, OPT_SERVER_ID

mysql-test/r/information_schema.result

@@ -725,7 +725,7 @@ CREATE TABLE t_crashme ( f1 BIGINT);
 CREATE VIEW a1 (t_CRASHME) AS SELECT f1 FROM t_crashme GROUP BY f1;
 CREATE VIEW a2 AS SELECT t_CRASHME FROM a1;
 count(*)
-103
+104
 drop view a2, a1;
 drop table t_crashme;
 select table_schema,table_name, column_name from
@@ -796,7 +796,7 @@ delete from mysql.db where user='mysqltest_4';
 flush privileges;
 SELECT table_schema, count(*) FROM information_schema.TABLES GROUP BY TABLE_SCHEMA;
 table_schema	count(*)
-information_schema	17
+information_schema	18
 mysql	18
 create table t1 (i int, j int);
 create trigger trg1 before insert on t1 for each row

mysql-test/t/mysqlslap.test

@@ -2,8 +2,12 @@
 --source include/not_embedded.inc
 --source include/not_windows.inc
 
---exec $MYSQL_SLAP --silent --drop-schema --concurrency=5 --concurrency-load=5 --iterations=20 --number-int-cols=2 --number-char-cols=3 --number-rows=12 --auto-generate-sql
+--exec $MYSQL_SLAP --silent --concurrency=5 --concurrency-load=5 --iterations=20 --number-int-cols=2 --number-char-cols=3 --number-rows=12 --auto-generate-sql
 
---exec $MYSQL_SLAP --silent --drop-schema --concurrency=5 --concurrency-load=5 --iterations=20 --number-rows=10 --query="select * from t1" --data="INSERT INTO t1 VALUES (1, 'This is a test')" --create="CREATE TABLE t1 (id int, name varchar(64))"
+--exec $MYSQL_SLAP --only-print --concurrency=5 --concurrency-load=5 --iterations=20 --number-rows=10 --query="select * from t1" --data="INSERT INTO t1 VALUES (1, 'This is a test')" --create="CREATE TABLE t1 (id int, name varchar(64))"
 
---exec $MYSQL_SLAP --silent --drop-schema --concurrency=5 --concurrency-load=5 --iterations=20 --delimiter=";" --number-rows=10 --query="select * from t1;select * from t2" --data="INSERT INTO t1 VALUES (1, 'This is a test'); insert into t2 values ('test', 'test2')" --create="CREATE TABLE t1 (id int, name varchar(64)); create table t2(foo1 varchar(32), foo2 varchar(32))"
+--exec $MYSQL_SLAP --silent --concurrency=5 --concurrency-load=5 --iterations=20 --number-rows=10 --query="select * from t1" --data="INSERT INTO t1 VALUES (1, 'This is a test')" --create="CREATE TABLE t1 (id int, name varchar(64))"
+
+--exec $MYSQL_SLAP --only-print --concurrency=5 --concurrency-load=5 --iterations=20 --delimiter=";" --number-rows=10 --query="select * from t1;select * from t2" --data="INSERT INTO t1 VALUES (1, 'This is a test'); insert into t2 values ('test', 'test2')" --create="CREATE TABLE t1 (id int, name varchar(64)); create table t2(foo1 varchar(32), foo2 varchar(32))"
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --concurrency-load=5 --iterations=20 --delimiter=";" --number-rows=10 --query="select * from t1;select * from t2" --data="INSERT INTO t1 VALUES (1, 'This is a test'); insert into t2 values ('test', 'test2')" --create="CREATE TABLE t1 (id int, name varchar(64)); create table t2(foo1 varchar(32), foo2 varchar(32))"