Post-review fixes, mainly fixing all print() methods for sp_instr* classes.

Also added mysql-test files:
 include/is_debug_build.inc
 r/is_debug_build.require
 r/sp-code.result
 t/sp-code.test


sql/sp_head.cc:
  Review fixes:
  - Some minor editorial changes
  - Fixed all print() methods for instructions:
    - reserve() enough space
    - check return value from reserve()
    - use qs_append, with length arg, whenever possible
sql/sp_pcontext.cc:
  Review fixes.
  Also fixed bug in find_cursor().
sql/sp_pcontext.h:
  Changed parameter names (review fix).
sql/sql_parse.cc:
  Moved comment. (Review fix)
mysql-test/include/is_debug_build.inc:
  New BitKeeper file ``mysql-test/include/is_debug_build.inc''
mysql-test/r/is_debug_build.require:
  New BitKeeper file ``mysql-test/r/is_debug_build.require''
mysql-test/r/sp-code.result:
  New BitKeeper file ``mysql-test/r/sp-code.result''
mysql-test/t/sp-code.test:
  New BitKeeper file ``mysql-test/t/sp-code.test''

2 files changed, 67 insertions, 0 deletions

diff --git a/mysql-test/r/is_debug_build.require b/mysql-test/r/is_debug_build.require
new file mode 100644
index 00000000000..4d77bcdc1ed
--- /dev/null
+++ b/mysql-test/r/is_debug_build.require
@@ -0,0 +1,2 @@
+instr(version(), "debug") > 0
+1
diff --git a/mysql-test/r/sp-code.result b/mysql-test/r/sp-code.result
new file mode 100644
index 00000000000..e9597af10ee
--- /dev/null
+++ b/mysql-test/r/sp-code.result
@@ -0,0 +1,65 @@
+select version(), substring_index(version(), "-", -1);
+version()	substring_index(version(), "-", -1)
+5.0.17-debug-log	log
+create procedure empty()
+begin
+end;
+show procedure code empty;
+Pos	Instruction
+drop procedure empty;
+create function almost_empty()
+returns int
+return 0;
+show function code almost_empty;
+Pos	Instruction
+0	freturn 3 0
+drop function almost_empty;
+create procedure code_sample(x int, out err int, out nulls int)
+begin
+declare count int default 0;
+set nulls = 0;
+begin
+declare c cursor for select name from t1;
+declare exit handler for not found close c;
+open c;
+loop
+begin
+declare n varchar(20);
+declare continue handler for sqlexception set err=1;
+fetch c into n;
+if isnull(n) then
+set nulls = nulls + 1;
+else
+set count = count + 1;
+update t2 set idx = count where name=n;
+end if;
+end;
+end loop;
+end;
+select t.name, t.idx from t2 t order by idx asc;
+end//
+show procedure code code_sample;
+Pos	Instruction
+0	set count@3 0
+1	set nulls@2 0
+2	cpush c@0
+3	hpush_jump 6 4 EXIT
+4	cclose c@0
+5	hreturn 0 19
+6	copen c@0
+7	set n@4 NULL
+8	hpush_jump 11 5 CONTINUE
+9	set err@1 1
+10	hreturn 5
+11	cfetch c@0 n@4
+12	jump_if_not 15 isnull(n@4)
+13	set nulls@2 (nulls@2 + 1)
+14	jump 17
+15	set count@3 (count@3 + 1)
+16	stmt 4 "update t2 set idx = count where name=n"
+17	hpop 1
+18	jump 7
+19	hpop 1
+20	cpop 1
+21	stmt 0 "select t.name, t.idx from t2 t order ..."
+drop procedure code_sample;