Don't assert if my_thread_end() is called twice (common case)


client/mysql.cc:
  Removed not used variables
client/mysqldump.c:
  Fixed compiler warnings
client/mysqltest.c:
  Fixed compiler warnings
cmd-line-utils/readline/bind.c:
  Fixed compiler warnings
cmd-line-utils/readline/histfile.c:
  Fixed compiler warnings
extra/replace.c:
  Fixed compiler warning on windows
extra/yassl/taocrypt/include/algebra.hpp:
  Fixed compiler warnings
heap/hp_write.c:
  Fixed compiler warnings
innobase/os/os0file.c:
  Fixed compiler warnings
libmysql/libmysql.c:
  Call my_end()/my_thread_end last.
  my_end() calls free_charsets(), which allowed me to move the call
myisam/myisampack.c:
  Fixed compiler warnings
myisammrg/myrg_rkey.c:
  Fixed compiler warnings
mysys/my_thr_init.c:
  More comments
  Don't assert if my_thread_end() is called twice (common case)
ndb/src/mgmapi/mgmapi.cpp:
  Fixed compiler warnings
ndb/src/ndbapi/Ndb.cpp:
  Fixed compiler warnings
ndb/src/ndbapi/NdbScanOperation.cpp:
  Fixed compiler warnings
ndb/src/ndbapi/NdbTransaction.cpp:
  Fixed compiler warnings
ndb/src/ndbapi/Ndblist.cpp:
  Fixed compiler warnings
server-tools/instance-manager/guardian.cc:
  Removed not used variable
server-tools/instance-manager/portability.h:
  Removed duplicated symbol
sql/gen_lex_hash.cc:
  Fixed compiler warning
sql/ha_archive.cc:
  Fixed compiler warnings
sql/ha_ndbcluster.cc:
  Fixed compiler warnings
sql/mysqld.cc:
  Fixed compiler warnings
sql/sql_cache.cc:
  Fixed compiler warnings
  Fixed DBUG_PRINT strings to be consistent with 5.1
sql/tztime.cc:
  Fixed compiler warnings
sql/uniques.cc:
  Fixed compiler warnings