make install for cvs still make gp450win32-setup.exe

[Tatsuro M. <tma...@ya...>]

Hello

Because gnuplot 4.6.0 is released, the version of cvs source bumps to 4.7.
I tried to build using the latest source.

However, make installer 
still builds gp450win32-setup.exe not but gp470win32-setup.exe.

I will try to fix it (config/mingw/Makefile) but I do not aware where to be fixed.

Regards

Tatsuro