- Disabling VC++ bool conversion warning here instead of in individual   files. - Added currently-unused DLLEXPORT stuff, hopefully so that someone can   figure out how to make a DLL on Windows.
- Disabling VC++ bool conversion warning here instead of in individual
  files.
- Added currently-unused DLLEXPORT stuff, hopefully so that someone can
  figure out how to make a DLL on Windows.

winsock/mysqlpp,winsock/mysqlpp,winsock/mysqlpp