r45475 snapshot

Gtk3: remove cross-compiling magic from Windows bindist script

Cross compiling using Linux hasn't been tested in four years, in which time a 
lot of changes have been made to the native (MSYS) portion of the script, but
the cross portion of the script remained untouched and untested.


git-svn-id: https://svn.code.sf.net/p/vice-emu/code/trunk@45475 379a1393-f5fb-40a0-bcee-ef074d9b53f7