Backport: Remove unused and ancient files, functions, and facilities.

client/mysql.cc:
  Remove unused functions.
client/sql_string.cc:
  Remove unused functions.
include/my_pthread.h:
  Remove unused prototype.
mysys/my_pthread.c:
  Remove unused function.
sql/lock.cc:
  Remove unused function.
sql/lock.h:
  Remove unused and duplicated prototypes.
sql/sql_class.h:
  Removed unused variables.
sql/sql_const.h:
  Remove unused defines.
sql/sql_priv.h:
  Remove unused defines.
sql/sql_string.cc:
  Remove unused prototype.
sql/thr_malloc.cc:
  Remove unused function.
sql/thr_malloc.h:
  Remove unused prototype.
storage/myisam/CMakeLists.txt:
  Remove obsolete fulltext file.
storage/myisam/Makefile.am:
  Remove obsolete files (were already commented out).
storage/myisam/ft_eval.c:
  Remove obsolete fulltext file.
storage/myisam/ft_eval.h:
  Remove obsolete fulltext file.
storage/myisam/ft_stem.c:
  Remove obsolete fulltext file.
storage/myisam/ft_test1.c:
  Remove obsolete fulltext file.
storage/myisam/ft_test1.h:
  Remove obsolete fulltext file.

1 files changed, 0 insertions, 7 deletions

diff --git a/sql/sql_string.cc b/sql/sql_string.cc
index 9fbc06b7529..762eebba031 100644
--- a/sql/sql_string.cc
+++ b/sql/sql_string.cc
@@ -24,13 +24,6 @@
 #include <m_string.h>
 #include <m_ctype.h>
 #include <mysql_com.h>
-/*
-  The following extern declarations are ok as these are interface functions
-  required by the string function
-*/
-
-extern uchar* sql_alloc(unsigned size);
-extern void sql_element_free(void *ptr);
 
 #include "sql_string.h"