Implemented the stored procedure data access characteristics:

NO SQL
CONTAINS SQL (default)
READS SQL DATA
MODIFIES SQL DATA

These are needed as hints for the replication.
(Before this, we did have the default in the mysql.proc table, but no support in the parser.)


mysql-test/r/sp.result:
  Modified test cases for new data access characteristics.
mysql-test/t/sp.test:
  Modified test cases for new data access characteristics.
scripts/mysql_create_system_tables.sh:
  We now support all the SP data access characteristics (not just CONTAINS SQL).
scripts/mysql_fix_privilege_tables.sql:
  We now support all the SP data access characteristics (not just CONTAINS SQL).
sql/lex.h:
  New tokens for SP data access characteristics.
sql/sp.cc:
  Store, print and support alter of data access characteristics.
sql/sp_head.cc:
  Added SP_ prefix to some symbols.
sql/sql_lex.h:
  Added SP_ prefix to some symbols, and added SP data access enum.
sql/sql_yacc.yy:
  Parse SP data access characteristics.
  (And allow "alter ... language sql", mostly as a formality, it was accidently
   put in the wrong clause before.)

mysql-test/r/sp.result

@@ -877,10 +877,17 @@ drop table t3|
 drop procedure cur2|
 create procedure chistics()
 language sql
+modifies sql data
 not deterministic
 sql security definer
 comment 'Characteristics procedure test'
- insert into t1 values ("chistics", 1)|
+  insert into t1 values ("chistics", 1)|
+show create procedure chistics|
+Procedure	sql_mode	Create Procedure
+chistics		CREATE PROCEDURE `test`.`chistics`()
+    MODIFIES SQL DATA
+    COMMENT 'Characteristics procedure test'
+insert into t1 values ("chistics", 1)
 call chistics()|
 select * from t1|
 id	data
@@ -890,6 +897,7 @@ alter procedure chistics sql security invoker name chistics2|
 show create procedure chistics2|
 Procedure	sql_mode	Create Procedure
 chistics2		CREATE PROCEDURE `test`.`chistics2`()
+    MODIFIES SQL DATA
     SQL SECURITY INVOKER
     COMMENT 'Characteristics procedure test'
 insert into t1 values ("chistics", 1)
@@ -899,14 +907,24 @@ language sql
 deterministic
 sql security invoker
 comment 'Characteristics procedure test'
- return 42|
+  return 42|
+show create function chistics|
+Function	sql_mode	Create Function
+chistics		CREATE FUNCTION `test`.`chistics`() RETURNS int
+    DETERMINISTIC
+    SQL SECURITY INVOKER
+    COMMENT 'Characteristics procedure test'
+return 42
 select chistics()|
 chistics()
 42
-alter function chistics name chistics2 comment 'Characteristics function test'|
+alter function chistics name chistics2
+no sql
+comment 'Characteristics function test'|
 show create function chistics2|
 Function	sql_mode	Create Function
 chistics2		CREATE FUNCTION `test`.`chistics2`() RETURNS int
+    NO SQL
     DETERMINISTIC
     SQL SECURITY INVOKER
     COMMENT 'Characteristics function test'

mysql-test/t/sp.test

@@ -978,12 +978,14 @@ drop procedure cur2|
 
 # The few characteristics we parse
 create procedure chistics()
-  language sql
-  not deterministic
-  sql security definer
-  comment 'Characteristics procedure test'
- insert into t1 values ("chistics", 1)|
+    language sql
+    modifies sql data
+    not deterministic
+    sql security definer
+    comment 'Characteristics procedure test'
+  insert into t1 values ("chistics", 1)|
 
+show create procedure chistics|
 # Call it, just to make sure.
 call chistics()|
 select * from t1|
@@ -993,15 +995,18 @@ show create procedure chistics2|
 drop procedure chistics2|
 
 create function chistics() returns int
-  language sql
-  deterministic
-  sql security invoker
-  comment 'Characteristics procedure test'
- return 42|
+    language sql
+    deterministic
+    sql security invoker
+    comment 'Characteristics procedure test'
+  return 42|
 
+show create function chistics|
 # Call it, just to make sure.
 select chistics()|
-alter function chistics name chistics2 comment 'Characteristics function test'|
+alter function chistics name chistics2
+   no sql
+   comment 'Characteristics function test'|
 show create function chistics2|
 drop function chistics2|