installation directory of gfortran on Windows

[Vivek Rao]

I have previously installed mingw gfortran in
c:\programs\gfortran . When I install the latest
version, it installs by default in the c:\program
files\gfortran directory. I am able to change the
default, but I would prefer that installer set the
default installation directory to the one where
gfortran has already been installed, if there is such
a directory. This is what the g95 installer does.

This is a minor quibble. Thanks to FX for the binaries
and all the gfortran developers for their work.

Vivek Rao