cygwin compilation

[Bernd Prager]

I was able to compile mysql++-2.0.5 in cygwin after
- creating a symbolic link libmysqlclient_r.a to libmysqlclient.la
and
- moving the -lz linker option to the end "LIBS = -lmysqlclient_r -lz"

I don't know why cygwin is so sensitive with the libz library but it works.

In case somebody needs that.

Best,
-- Bernd