Mostly fixes for the Windows compilers this time:

o configure check for libmysqlclient now halts configuration if the library isn't found. Previously, it would just be flagged as missing, and MySQL++ would fail to build.

o Added sql_string.cpp to VC++ and BCBuilder project files.

o Removed Totte Karlsson's 'populate' example, which never made it into the distribution anyway.

o Removed last vestiges of 'dummy.cpp'.

o Renamed *.cc to *.cpp in BCBuilder project files.

o Worked around a BCBuilder C++ syntax processing bug in row.h.

As always, it is available at http://tangentsoft.net/mysql++/