Change some my_bool in C++ classes and a few functions to bool to detect wrong usage of bool/my_bool.

Fix some bugs where we stored values other than 0 or 1 in my_bool
Fixed some compiler warnings


client/mysql.cc:
  Changed interrupted_query from my_bool to int, as we stored 2 in it.
client/mysqladmin.cc:
  Changed return variable type to same type as function value type
client/mysqltest.cc:
  Changed 'found' to int as we store other values than 0 or 1 into it
  Changed type for parameter of set_reconnect() to match usage.
extra/libevent/evbuffer.c:
  Added __attribute__((unused))
extra/libevent/event.c:
  Added __attribute__((unused))
extra/libevent/signal.c:
  Added __attribute__((unused))
sql/event_data_objects.h:
  my_bool -> bool
sql/event_db_repository.cc:
  my_bool -> bool
sql/event_db_repository.h:
  my_bool -> bool
sql/event_parse_data.h:
  my_bool -> bool
sql/events.cc:
  my_bool -> bool
sql/events.h:
  my_bool -> bool
sql/field.cc:
  my_bool -> bool
sql/field.h:
  my_bool -> bool
sql/hash_filo.h:
  my_bool -> bool
sql/item.cc:
  my_bool -> bool
sql/item.h:
  my_bool -> bool
sql/item_cmpfunc.h:
  my_bool -> bool
  Changed result_for_null_param from my_bool to int as we stored -1 in it.
sql/item_func.cc:
  my_bool -> bool
  Modified udf wrapper functions so that the UDF functions would continue to use my_bool. (To keep compatibility with UDF:s)
sql/item_func.h:
  my_bool -> bool
sql/item_subselect.h:
  my_bool -> bool
sql/item_sum.cc:
  Modified udf wrapper functions so that the UDF functions would continue to use my_bool. (To keep compatibility with UDF:s)
sql/parse_file.h:
  my_bool -> bool
sql/rpl_mi.h:
  my_bool -> bool
sql/sp_rcontext.h:
  my_bool -> bool
sql/sql_analyse.h:
  my_bool -> bool
sql/sql_base.cc:
  Change some assignments so that we don't initialize bool variables with int's.
sql/sql_bitmap.h:
  my_bool -> bool
sql/sql_cache.cc:
  my_bool -> bool
sql/sql_cache.h:
  my_bool -> bool
sql/sql_class.h:
  my_bool -> bool
sql/sql_insert.cc:
  Change some assignments so that we don't initialize bool variables with int's.
sql/sql_prepare.cc:
  my_bool -> bool
sql/table.h:
  my_bool -> bool
storage/maria/ma_check.c:
  Removed duplicate assignment
strings/decimal.c:
  Fixed wrong variable usage.
  Don't do complex arithmetic on bool when simple works.

3 files changed, 4 insertions, 3 deletions

diff --git a/extra/libevent/evbuffer.c b/extra/libevent/evbuffer.c
index 6fe791380ea..432d75d1c53 100644
--- a/extra/libevent/evbuffer.c
+++ b/extra/libevent/evbuffer.c
@@ -75,7 +75,7 @@ bufferevent_add(struct event *ev, int timeout)
  */
 
 void
-bufferevent_read_pressure_cb(struct evbuffer *buf, size_t old, size_t now,
+bufferevent_read_pressure_cb(struct evbuffer *buf, size_t old __attribute__((unused)), size_t now,
     void *arg) {
 	struct bufferevent *bufev = arg;
 	/* 
diff --git a/extra/libevent/event.c b/extra/libevent/event.c
index e96c1b6a3ab..2042c2de626 100644
--- a/extra/libevent/event.c
+++ b/extra/libevent/event.c
@@ -394,7 +394,8 @@ event_base_get_method(struct event_base *base)
 }
 
 static void
-event_loopexit_cb(int fd, short what, void *arg)
+event_loopexit_cb(int fd __attribute__((unused)),
+                  short what __attribute__((unused)), void *arg)
 {
 	struct event_base *base = arg;
 	base->event_gotterm = 1;
diff --git a/extra/libevent/signal.c b/extra/libevent/signal.c
index 964ae37fed2..5eb9d3c606e 100644
--- a/extra/libevent/signal.c
+++ b/extra/libevent/signal.c
@@ -69,7 +69,7 @@ static void evsignal_handler(int sig);
 
 /* Callback for when the signal handler write a byte to our signaling socket */
 static void
-evsignal_cb(int fd, short what, void *arg)
+evsignal_cb(int fd, short what __attribute__((unused)), void *arg __attribute__((unused)))
 {
 	static char signals[100];
 #ifdef WIN32