Disabled use of GetSystemWindowsDirectory() when compiled with VC6
mysql.cc:
  Removed unused variable 'field' from print_warnings()
libmysql.dsp:
  Added "my_chsize.c" and "my_seek.c"
mysqlclient.dsp:
  Added "my_chsize.c"


VC++Files/client/mysqlclient.dsp:
  Added "my_chsize.c"
VC++Files/libmysql/libmysql.dsp:
  Added "my_chsize.c" and "my_seek.c"
client/mysql.cc:
  Removed unused variable 'field' from print_warnings()
mysys/default.c:
  Disabled use of GetSystemWindowsDirectory() when compiled with VC6