VC++Files/client/mysqlslap.vcproj:
  Added references to mysqlclient.lib & mysys.lib for mysqlslap build on win32.
VC++Files/mysql.sln:
  mysqlslap.vcproj is added into mysql.sln
client/mysqlslap.c:
  Win32 specific code is added to build & run mysqlslap successfully on win32.