System file reorganisation

[Neil Hotmail]

There are lots of little bits that need tweaking, I need to rewrite some of
the functions in system.cxx and in system_win32.cxx, but these can be done
at any time, this should be one of the largest changes to be committed.

I have deliberately not changed any of the code, even where it badly needs
changing, so as not to bundle subtle changes up with this.

system_posix.cxx goes in the folder src/posix/system_posix.cxx
system_win32.cxx goes in the folder src/win32/system_win32.cxx

Ginge

ginge.patch
Description: Binary data

system_posix.cxx
Description: Text document

system_win32.cxx
Description: Text document