Fixed udf_example, so tests now can also run udf on win.


sql/udf_example.def:
  BitKeeper file /home/georg/work/mysql/prod/mysql-5.1-win/sql/udf_example.def
include/config-win.h:
  removed USE_32_BIT_TIME
include/my_time.h:
  Fixed size of my_time for Win64 (should be 64bit)
mysql-test/mysql-test-run.pl:
  Added windows paths for udf_example
sql/CMakeLists.txt:
  Added udf_example.dll
sql/udf_example.c:
  Windows doesn't know about socket.h and friends. Use winsock.h instead