Portability fixes.
Removed compiler warnings.



VC++Files/client/mysql.dsp:
  Updated to 4.0.2
VC++Files/client/mysqladmin.dsp:
  Updated to 4.0.2
VC++Files/client/mysqlclient.dsp:
  Updated to 4.0.2
VC++Files/client/mysqldump.dsp:
  Updated to 4.0.2
VC++Files/client/mysqlimport.dsp:
  Updated to 4.0.2
VC++Files/client/mysqlshow.dsp:
  Updated to 4.0.2
VC++Files/innobase/innobase.dsp:
  Updated to 4.0.2
VC++Files/libmysql/libmySQL.dsp:
  Updated to 4.0.2
VC++Files/libmysqltest/myTest.dsp:
  Updated to 4.0.2
VC++Files/merge/merge.dsp:
  Updated to 4.0.2
VC++Files/myisam/myisam.dsp:
  Updated to 4.0.2
VC++Files/mysql.dsw:
  Updated to 4.0.2
VC++Files/mysqlbinlog/mysqlbinlog.dsp:
  Updated to 4.0.2
VC++Files/mysqlcheck/mysqlcheck.dsp:
  Updated to 4.0.2
VC++Files/mysqlmanager/MySqlManager.dsp:
  Updated to 4.0.2
VC++Files/mysys/mysys.dsp:
  Updated to 4.0.2
VC++Files/pack_isam/pack_isam.dsp:
  Updated to 4.0.2
VC++Files/perror/perror.dsp:
  Updated to 4.0.2
VC++Files/replace/replace.dsp:
  Updated to 4.0.2
VC++Files/sql/mysqld.dsp:
  Updated to 4.0.2
VC++Files/test1/test1.dsp:
  Updated to 4.0.2
VC++Files/thr_insert_test/thr_insert_test.dsp:
  Updated to 4.0.2
VC++Files/thr_test/thr_test.dsp:
  Updated to 4.0.2
VC++Files/vio/vio.dsp:
  Updated to 4.0.2
VC++Files/zlib/zlib.dsp:
  Updated to 4.0.2
include/config-win.h:
  Added isnan() and finite()
include/myisam.h:
  Move thr_xxx functions to myisam_priv.h
myisam/mi_check.c:
  Portability fix.
myisam/mi_locking.c:
  Comment cleanup
myisam/myisamchk.c:
  Removed compiler warning
myisam/myisamdef.h:
  Added thr_xxx functions
myisam/sort.c:
  Portability fix
sql/field.cc:
  Portability fix
sql/sql_insert.cc:
  R